Update azure-pipelines-ci.yml for Azure Pipelines

azure-pipelines-ci.yml

@@ -7,15 +7,40 @@ trigger:
     - dev
 pr: none
 
+resources:
+  containers:
+  - container: 35
+    image: python:3.5
+  - container: 36
+    image: python:3.6
+  - container: 37
+    image: python:3.7
+
 
 variables:
   - name: ArtifactFeed
     value: '2df3ae11-3bf6-49bc-a809-ba0d340d6a6d'
+  - name: PythonMain
+    value: '35'
 
 
 jobs:
 
+- job: 'Lint'
+  pool:
+    vmImage: 'ubuntu-latest'
+  container: $[ variables['PythonMain'] ]
+  steps:
+  - script: |
+      pip install flake8
+      flake8 homeassistant tests script
+    displayName: 'Run flake8'
+
+
 - job: 'Check'
+  dependsOn:
+  - Lint
+  condition: succeeded()
   pool:
     vmImage: 'ubuntu-latest'
   strategy:
@@ -23,18 +48,18 @@ jobs:
     matrix:
       Python35:
         python.version: '3.5'
-        python.container: 'python:3.5'
+        python.container: '35'
       Python36:
         python.version: '3.6'
-        python.container: 'python:3.6'
+        python.container: '36'
       Python37:
         python.version: '3.7'
-        python.container: 'python:3.7'
+        python.container: '37'
   container: $[ variables['python.container'] ]
   steps:
   - script: |
-      sudo apt-get update
+      apt-get update
-      sudo apt-get install -y --no-install-recommends \
+      apt-get install -y --no-install-recommends \
         libudev libavformat libavcodec libavdevice libavutil libswscale libswresample libavfilter
 
       echo "$(python.version)" > .cache
@@ -49,7 +74,7 @@ jobs:
 
   - script: |
       # Install build env
-      sudo apt-get install -y --no-install-recommends \
+      apt-get install -y --no-install-recommends \
         libudev-dev libavformat-dev libavcodec-dev libavdevice-dev libavutil-dev libswscale-dev libswresample-dev libavfilter-dev
 
       # Setup venv
@@ -57,7 +82,7 @@ jobs:
       
       . venv/bin/activate
       pip install -U pip setuptools
-      pip3 install -r requirements_test_all.txt -c homeassistant/package_constraints.txt
+      pip install -r requirements_test_all.txt -c homeassistant/package_constraints.txt
     displayName: 'Create Virtual Environment & Install Requirements'
     condition: ne(variables['CacheRestored'], 'true')
 
@@ -77,3 +102,11 @@ jobs:
       . venv/bin/activate
       pytest --timeout=9 --durations=10 -qq -o console_output_style=count -p no:sugar tests
     displayName: 'Run pytest for python $(python.version)'
+
+  - script: |
+      . venv/bin/activate
+      pip install -r requirements_all.txt -c homeassistant/package_constraints.txt
+
+      pylint homeassistant
+    displayName: 'Run pylint'
+    condition: eq($(python.container), $(PythonMain))