Fix two testing problems

First up we need python2.7 specific msrest version as azure-storage-blob
depends on it and it doesn't properly specify python versions for its
releases.

Next we cannot use zuul/zuul to test ensure-pip can install packages
because zuul/zuul requires python3.8 or newer now. Some platforms we run
ensure-pip on still only have python3.6. We address this by using
zuul-client instead.

Change-Id: I3d91fd3f85e3d7845ab2d7615a1ebfb614064573

test-playbooks/ensure-pip.yaml

@@ -28,13 +28,13 @@
 
     - name: Sanity check pip wheel generation
       shell: |
-        cd {{ ansible_user_dir }}/src/opendev.org/zuul/zuul
+        cd {{ ansible_user_dir }}/src/opendev.org/zuul/zuul-client
         # This should run anywhere without too much logic ...
         run_pip=$(command -v pip3 || command -v pip2 || command -v pip)
         # Preinstall pbr to work around very old distutils lacking SNI support
         $run_pip install pbr
         $run_pip wheel --no-deps .
-        ls zuul-*.whl || exit 1
+        ls zuul_client-*.whl || exit 1
 
     - name: Test virtualenv
       # NOTE(ianw) 2022-02-03 : not supported on 9-stream, see inline comments

test-requirements.txt

@@ -39,6 +39,9 @@ protobuf<3.18;python_version<'3.6'
 # For upload-logs-s3
 boto3
 
+# Dep of azure-storage-blob
+msrest<0.7.0;python_version=='2.7'
+
 # For upload-logs-azure
 azure-storage-blob
 

zuul-tests.d/python-jobs.yaml

@@ -3,7 +3,7 @@
     description: Test the ensure-pip role
     # dummy project for wheel build test
     required-projects:
-      - zuul/zuul
+      - zuul/zuul-client
     files:
       - roles/ensure-pip/.*
       - roles/ensure-virtualenv/.*