Add system-metrics to system role

A user reported that network policies stopped the metrics on the
dashboard from loading. When the policy was removed, then the
data loaded. system-metrics needs this role so that it can query
Prometheus in the openfaas namespace.

Signed-off-by: Alex Ellis <alexellis2@gmail.com>

Update to latest git-tar

This version of git-tar passes user annotations to the
buildshiprun function.

Signed-off-by: Alex Ellis <alexellis2@gmail.com>

Document custom labels / annotations

Documentation for: openfaas#465

Signed-off-by: Alex Ellis <alexellis2@gmail.com>

Add labels/annotations to event SDK

Signed-off-by: Alex Ellis <alexellis2@gmail.com>

add dpayne-ytel to CUSTOMERS list

Signed-off-by: Daniel Payne <daniel.payne@ytel.com>

Update renamed file

Signed-off-by: Alex Ellis <alexellis2@gmail.com>

Add ryanbascom to CUSTOMERS file

Signed-off-by: Ryan Bascom <ryanbascom@gmail.com>

Restrict SealedSecrets RoleBinding to ServiceAccount

The original work by @bartsmykla had the unfortunate effect of
granting CREATE / GET and UPDATE to every Deployment in the
openfaas-fn namespace including user functions.

This commit ties that down to just functions which have a specific
ServiceAccount set of sealedsecrets-importer-rw. Tested on DOKS
with a sample user function which worked before and got access
denied after.

Signed-off-by: Alex Ellis <alexellis2@gmail.com>

Bump github-event version

Signed-off-by: Alex Ellis <alexellis2@gmail.com>

Add the URL builders to SDK

Adding the URL builders to SDK in seperate PR to
vendor them in the PR openfaas#323 once this commit
is merged/released

Signed-off-by: Martin Dekov (VMware) <mdekov@vmware.com>