Upgrade Python version from 3.6 to 3.7

testing/pipeline/k8s-custom-pipelines.yml

@@ -55,7 +55,7 @@ stages:
       path: ./test/extensions/public/Flux.Tests.ps1
   - job: BuildPublishExtension
     pool:
-      vmImage: 'ubuntu-latest'
+      vmImage: 'ubuntu-20.04'
     displayName: "Build and Publish the Extension Artifact"
     variables: 
       CLI_REPO_PATH: $(Agent.BuildDirectory)/s
@@ -105,10 +105,11 @@ stages:
 
         azdev verify license
 
+
   - job: StaticAnalysis
     displayName: "Static Analysis"
     pool:
-      vmImage: 'ubuntu-latest'
+      vmImage: 'ubuntu-20.04'
     steps:
       - task: UsePythonVersion@0
         displayName: 'Use Python 3.6'
@@ -209,4 +210,4 @@ stages:
         displayName: "CLI Linter on Modified Extension"
         env:
           ADO_PULL_REQUEST_LATEST_COMMIT: $(System.PullRequest.SourceCommitId)
-          ADO_PULL_REQUEST_TARGET_BRANCH: $(System.PullRequest.TargetBranch)
+          ADO_PULL_REQUEST_TARGET_BRANCH: $(System.PullRequest.TargetBranch)

testing/pipeline/templates/build-extension.yml

@@ -49,4 +49,4 @@ steps:
 
     azdev --version
     azdev setup -c ../azure-cli -r ${{ parameters.CLI_REPO_PATH }} -e $(EXTENSION_NAME)
-    azdev extension build $(EXTENSION_NAME)
+    azdev extension build $(EXTENSION_NAME)

testing/pipeline/templates/run-test.yml

@@ -5,7 +5,7 @@ parameters:
 jobs:
 - job: ${{ parameters.jobName}}
   pool:
-    vmImage: 'ubuntu-latest'
+    vmImage: 'ubuntu-20.04'
   variables:
     ${{ if eq(variables['IS_PRIVATE_BRANCH'], 'False') }}:
       EXTENSION_NAME: "k8s-extension"
@@ -101,4 +101,4 @@ jobs:
       inlineScript: |
         .\Cleanup.ps1 -CI
       workingDirectory: $(TEST_PATH)
-    condition: succeededOrFailed()
+    condition: succeededOrFailed()