VM image changed for pipeline (#1170)

Co-authored-by: Roshan-sy <roshan-sy@github.com>

.azure-pipelines/azure-pipelines-create-release.yml

@@ -12,7 +12,7 @@ jobs:
 
 - job: 'Build_Publish_Azure_DevOps_CLI_Extension'
   pool:
-    vmImage: 'Ubuntu-16.04'
+    vmImage: 'ubuntu-latest'
 
   steps:
   - task: UsePythonVersion@0
@@ -26,7 +26,7 @@ jobs:
 
 - job: 'Build_Publish_Azure_CLI_Test_SDK'
   pool:
-    vmImage: 'Ubuntu-16.04'
+    vmImage: 'ubuntu-latest'
 
   steps:
   - task: UsePythonVersion@0

.azure-pipelines/azure-pipelines-live-test-run.yml

@@ -18,7 +18,7 @@ jobs:
 
 - job: 'Build_Publish_Azure_DevOps_CLI_Extension'
   pool:
-    vmImage: 'Ubuntu-16.04'
+    vmImage: 'ubuntu-latest'
 
   steps:
   - task: UsePythonVersion@0
@@ -32,7 +32,7 @@ jobs:
 
 - job: 'Build_Publish_Azure_CLI_Test_SDK'
   pool:
-    vmImage: 'Ubuntu-16.04'
+    vmImage: 'ubuntu-latest'
 
   steps:
   - task: UsePythonVersion@0
@@ -47,7 +47,7 @@ jobs:
 - job: 'Run_Test_Ubuntu'
   dependsOn : [ 'Build_Publish_Azure_CLI_Test_SDK', 'Build_Publish_Azure_DevOps_CLI_Extension']
   pool:
-    vmImage: 'Ubuntu-16.04'
+    vmImage: 'ubuntu-latest'
   
   steps:
   - task: UsePythonVersion@0

.azure-pipelines/azure-pipelines-merge.yml

@@ -12,7 +12,7 @@ jobs:
 
 - job: 'Build_Publish_Azure_DevOps_CLI_Extension'
   pool:
-    vmImage: 'Ubuntu-16.04'
+    vmImage: 'ubuntu-latest'
 
   steps:
   - task: UsePythonVersion@0
@@ -26,7 +26,7 @@ jobs:
 
 - job: 'Build_Publish_Azure_CLI_Test_SDK'
   pool:
-    vmImage: 'Ubuntu-16.04'
+    vmImage: 'ubuntu-latest'
 
   steps:
   - task: UsePythonVersion@0
@@ -60,7 +60,7 @@ jobs:
 - job: 'Run_Test_Ubuntu'
   dependsOn: ['Build_Publish_Azure_CLI_Test_SDK','Build_Publish_Azure_DevOps_CLI_Extension']
   pool:
-    vmImage: 'Ubuntu-16.04'
+    vmImage: 'ubuntu-latest'
   strategy:
     matrix:
       Python36:

.azure-pipelines/azure-pipelines-pr.yml

@@ -12,7 +12,7 @@ jobs:
 
 - job: 'Build_Publish_Azure_DevOps_CLI_Extension'
   pool:
-    vmImage: 'Ubuntu-16.04'
+    vmImage: 'ubuntu-latest'
 
   steps:
   - task: UsePythonVersion@0
@@ -26,7 +26,7 @@ jobs:
 
 - job: 'Build_Publish_Azure_CLI_Test_SDK'
   pool:
-    vmImage: 'Ubuntu-16.04'
+    vmImage: 'ubuntu-latest'
 
   steps:
   - task: UsePythonVersion@0
@@ -41,7 +41,7 @@ jobs:
 - job: 'Run_Test_Ubuntu'
   dependsOn : Build_Publish_Azure_CLI_Test_SDK
   pool:
-    vmImage: 'Ubuntu-16.04'
+    vmImage: 'ubuntu-latest'
   strategy:
     matrix:
       Python36:

.azure-pipelines/azure-pipelines-released-version.yml

@@ -17,7 +17,7 @@ jobs:
 
 - job: 'Build_Publish_Azure_CLI_Test_SDK'
   pool:
-    vmImage: 'Ubuntu-16.04'
+    vmImage: 'ubuntu-latest'
 
   steps:
   - task: UsePythonVersion@0
@@ -32,7 +32,7 @@ jobs:
 - job: 'Run_Test'
   dependsOn : Build_Publish_Azure_CLI_Test_SDK
   pool:
-    vmImage: 'Ubuntu-16.04'
+    vmImage: 'ubuntu-latest'
 
   steps:
     - task: UsePythonVersion@0

doc/samples.md

@@ -255,7 +255,7 @@ jobs:
 - job:
   displayName: 'Linux'
   pool:
-    vmImage: 'ubuntu-16.04'
+    vmImage: 'ubuntu-latest'
   steps:
   - template: azure-pipelines-steps-linux.yml