use service principal secret during build

skip test if credentials are missing

python/pipelines.yaml

@@ -8,13 +8,15 @@ steps:
 
 - script: |
     cd python
-    python install -e .[extra]
+    pip install -e .[extra]
   displayName: 'Install Package'
 
 - script: |
     cd python
     pytest --junitxml=junit/test-unitttest.xml
   displayName: 'Python Unit Tests'
+  env:
+    myserviceprincipal1: $(test_service_principal_secret)
 
 - task: PublishTestResults@2
   condition: succeededOrFailed()

python/tests/azure/storage/test_azure_storage.py

@@ -10,13 +10,18 @@ def test_subdir():
     os.chdir(os.path.dirname(os.path.abspath(__file__)))
 
 
+@pytest.mark.skipif(os.environ.get('myserviceprincipal1') is None,
+                    reason='Environment variable myserviceprincipal1 must be set to service principals secret')
 def test_service_principal(test_subdir):
+
     ws = pyworkspace.Workspace()
 
     svc1 = ws['myvault1']
     assert len(svc1.get_secret("workspacetest1")) > 0
 
 
+@pytest.mark.skipif(os.environ.get('myserviceprincipal1') is None,
+                    reason='Environment variable myserviceprincipal1 must be set to service principals secret')
 def test_service_csv1(test_subdir):
     ws = pyworkspace.Workspace()