Add missing flake8 dependency (contributes to #69) (#101)

Signed-off-by: Simon Stone <[email protected]>

azure-pipelines.yml

@@ -16,7 +16,7 @@ steps:
     inputs:
       versionSpec: "3.x"
     displayName: Use Python 3.x
-  - script: pip install ansible ansible-lint yamllint yq
+  - script: pip install ansible ansible-lint flake8 yamllint yq
     displayName: Install Python dependencies
   - script: |
       set -ex
@@ -30,17 +30,22 @@ steps:
       sudo tar xvf fabric-ca-bins.tar.gz -C /usr/local
       rm fabric-ca-bins.tar.gz
     displayName: Download Fabric CA CLI
+  - script: |
+      set -ex
+      ansible-galaxy collection build
+    displayName: Build collection artifact
+  - script: |
+      set -ex
+      VERSION=$(yq -r .version galaxy.yml)
+      ansible-galaxy collection install ibm-blockchain_platform-${VERSION}.tar.gz
+    displayName: Install collection
   - script: |
       set -ex
       flake8 .
       ansible-lint .
       for ROLE in roles/*; do ansible-lint ${ROLE}; done
       yamllint .
-    displayName: Lint
-  - script: |
-      set -ex
-      ansible-galaxy collection build
-    displayName: Build collection artifact
+    displayName: Lint collection
   - script: |
       set -ex
       VERSION=$(yq -r .version galaxy.yml)