Merge remote-tracking branch 'substrate/master' into develop

* substrate/master: (100 commits)
  Cargo.toml fixups for the release (#4975)
  Update the documentation for `secp256k1_ecdsa_recover*` (#5019)
  Remove `NetworkSpecialization` (#4665)
  Add tests & Service's Configuration has optional fields that shouldn't be optional (#4842)
  Add gitlab job for publishing draft releases (#5009)
  Removes use of sc_client::Client from sc_consensus_babe (#5014)
  Wait for RPC server to cleanup on shutdown (#5004)
  Open one substream for each notifications protocol (#4909)
  node, node-template: disable GRANDPA observer (#5011)
  Make sure we use libp2p 0.16.1 (#5017)
  aura: remove unneeded SlotDuration struct and rename digest -> digests (#4958)
  babe: directly using append_u64 in transcript instead of to_le_bytes (#5005)
  Un-deprecate ValidateUnsigned (#5003)
  CI: Add example CI job template to .gitlab-ci.yml (#5012)
  Benchmark macro (#4962)
  Remove deprecated API (#4993)
  Unsigned transactions should also note weight (#4998)
  Offchain Workers: Example Pallet (#4989)
  Clean up the public API of sc-network-gossip (#5001)
  `vesting_balance` returns `Option` (#4987)
  ...

# Conflicts:
#	Cargo.lock
#	bin/node-template/node/src/service.rs
#	bin/node-template/pallets/template/src/mock.rs
#	bin/node-template/runtime/Cargo.toml
#	bin/node/cli/Cargo.toml
#	bin/node/cli/bin/main.rs
#	bin/node/cli/src/service.rs
#	bin/node/cli/tests/check_block_works.rs
#	bin/node/cli/tests/purge_chain_works.rs
#	bin/node/cli/tests/running_the_node_and_interrupt.rs
#	bin/node/executor/Cargo.toml
#	bin/node/executor/src/lib.rs
#	bin/node/executor/tests/basic.rs
#	bin/node/runtime/Cargo.toml
#	bin/node/runtime/src/lib.rs
#	bin/node/testing/Cargo.toml
#	bin/node/testing/benches/import.rs
#	bin/node/transaction-factory/src/lib.rs
#	bin/utils/subkey/Cargo.toml
#	client/authority-discovery/Cargo.toml
#	client/cli/Cargo.toml
#	client/cli/src/lib.rs
#	client/cli/src/params.rs
#	client/consensus/aura/Cargo.toml
#	client/executor/wasmtime/src/instance_wrapper.rs
#	client/finality-grandpa/src/communication/mod.rs
#	client/finality-grandpa/src/lib.rs
#	client/finality-grandpa/src/observer.rs
#	client/finality-grandpa/src/tests.rs
#	client/informant/Cargo.toml
#	client/network-gossip/Cargo.toml
#	client/network-gossip/src/bridge.rs
#	client/network/Cargo.toml
#	client/network/src/behaviour.rs
#	client/network/src/protocol.rs
#	client/network/src/protocol/block_requests.rs
#	client/network/src/protocol/generic_proto/behaviour.rs
#	client/network/src/protocol/generic_proto/handler.rs
#	client/network/src/protocol/light_client_handler.rs
#	client/network/src/protocol/schema/api.v1.proto
#	client/network/src/service.rs
#	client/network/src/transport.rs
#	client/peerset/src/lib.rs
#	client/rpc-api/Cargo.toml
#	client/service/Cargo.toml
#	client/service/src/builder.rs
#	client/service/src/chain_ops.rs
#	client/service/src/lib.rs
#	client/telemetry/Cargo.toml
#	client/transaction-pool/Cargo.toml
#	client/transaction-pool/graph/Cargo.toml
#	client/transaction-pool/graph/src/listener.rs
#	client/transaction-pool/graph/src/pool.rs
#	client/transaction-pool/src/lib.rs
#	client/transaction-pool/src/testing/pool.rs
#	docs/CODE_OF_CONDUCT.adoc
#	docs/CONTRIBUTING.adoc
#	docs/SECURITY.md
#	docs/Structure.adoc
#	frame/assets/src/lib.rs
#	frame/aura/src/mock.rs
#	frame/authorship/src/lib.rs
#	frame/babe/src/mock.rs
#	frame/balances/src/benchmarking.rs
#	frame/balances/src/lib.rs
#	frame/balances/src/tests.rs
#	frame/balances/src/tests_local.rs
#	frame/collective/src/lib.rs
#	frame/contracts/src/exec.rs
#	frame/contracts/src/tests.rs
#	frame/democracy/src/lib.rs
#	frame/elections-phragmen/src/lib.rs
#	frame/elections/src/mock.rs
#	frame/evm/Cargo.toml
#	frame/example/src/lib.rs
#	frame/executive/Cargo.toml
#	frame/executive/src/lib.rs
#	frame/finality-tracker/src/lib.rs
#	frame/generic-asset/src/lib.rs
#	frame/generic-asset/src/mock.rs
#	frame/grandpa/src/mock.rs
#	frame/identity/src/benchmarking.rs
#	frame/identity/src/lib.rs
#	frame/im-online/src/mock.rs
#	frame/indices/src/lib.rs
#	frame/indices/src/mock.rs
#	frame/membership/src/lib.rs
#	frame/nicks/src/lib.rs
#	frame/offences/src/mock.rs
#	frame/randomness-collective-flip/src/lib.rs
#	frame/recovery/src/mock.rs
#	frame/scored-pool/src/mock.rs
#	frame/session/src/mock.rs
#	frame/society/src/lib.rs
#	frame/society/src/mock.rs
#	frame/staking/Cargo.toml
#	frame/staking/src/lib.rs
#	frame/staking/src/mock.rs
#	frame/support/src/traits.rs
#	frame/system/src/lib.rs
#	frame/timestamp/Cargo.toml
#	frame/timestamp/src/benchmarking.rs
#	frame/timestamp/src/lib.rs
#	frame/transaction-payment/src/lib.rs
#	frame/treasury/src/lib.rs
#	frame/utility/src/lib.rs
#	frame/vesting/src/lib.rs
#	primitives/allocator/src/freeing_bump.rs
#	primitives/core/Cargo.toml
#	primitives/finality-grandpa/Cargo.toml
#	primitives/runtime/Cargo.toml
#	primitives/runtime/src/generic/unchecked_extrinsic.rs
#	primitives/runtime/src/testing.rs
#	primitives/state-machine/Cargo.toml
#	primitives/transaction-pool/src/pool.rs
#	test-utils/runtime/src/lib.rs
#	test-utils/runtime/transaction-pool/Cargo.toml
#	utils/browser/Cargo.toml
#	utils/grafana-data-source/test/Cargo.toml
#	utils/prometheus/Cargo.toml

.gitlab-ci.yml

@@ -5,6 +5,21 @@
 # pipelines can be triggered manually in the web
 # setting DEPLOY_TAG will only deploy the tagged image
 
+# SAMPLE JOB TEMPLATE - This is not a complete example but is enough to build a
+# simple CI job. For full documentation, visit https://docs.gitlab.com/ee/ci/yaml/
+#
+# my-example-job:
+#   stage:                           test # One of the stages listed below this job (required)
+#   image:                           parity/tools:latest # Any docker image (required)
+#   allow_failure:                   true # Allow the pipeline to continue if this job fails (default: false)
+#   dependencies:
+#     - build-rust-doc-release # Any jobs that are required to run before this job (optional)
+#   variables:
+#     MY_ENVIRONMENT_VARIABLE:       "some useful value" # Environment variables passed to the job (optional)
+#   script:
+#     - echo "List of shell commands to run in your job"
+#     - echo "You can also just specify a script here, like so:"
+#     - ./scripts/gitlab/my_amazing_script.sh
 
 stages:
   - test
@@ -524,7 +539,16 @@ publish-gh-doc:
   after_script:
     - rm -vrf ${HOME}/.gitconfig
 
-
+publish-draft-release:
+  stage:                           publish
+  image:                           parity/tools:latest
+  only:
+    - tags
+    - /^v[0-9]+\.[0-9]+\.[0-9]+.*$/
+  script:
+    - ./scripts/gitlab/publish_draft_release.sh
+  interruptible:                   true
+  allow_failure:                   true
 
 .deploy-template:                  &deploy
   stage:                           kubernetes

.maintain/kubernetes/templates/service.yaml

@@ -33,7 +33,7 @@ spec:
     app: {{ .Values.GitlabEnvSlug | default .Values.app }}
   sessionAffinity: None
   type: NodePort
-  # don't route exteral traffic to non-local pods
+  # don't route external traffic to non-local pods
   externalTrafficPolicy: Local
 {{- else if .Values.validator.keys }}
 {{- $root := . -}}

.maintain/kubernetes/values.yaml

@@ -48,7 +48,7 @@ validator: {}
   # substrate-1-node-key <node-secret-key>
   #
   # pod names are canonical. changing these or providing different amount of
-  # keys than the replicas count will lead to behavior noone ever has
+  # keys than the replicas count will lead to behavior no one ever has
   # experienced before.