[stable-2.9] Fix ansible-test AZP build lookup.

(cherry picked from commit 877e5b3dfe)

Co-authored-by: Matt Clay <matt@mystile.com>

changelogs/fragments/ansible-test-azp-build-api.yml

@@ -0,0 +1,2 @@
+bugfixes:
+  - ansible-test - Use documented API to retrieve build information from Azure Pipelines.

test/lib/ansible_test/_internal/ci/azp.py

@@ -230,9 +230,9 @@ class AzurePipelinesChanges:
             repositoryId='%s/%s' % (self.org, self.project),
         )
 
-        url = '%s%s/build/builds?%s' % (self.org_uri, self.project, urlencode(parameters))
+        url = '%s%s/_apis/build/builds?api-version=6.0&%s' % (self.org_uri, self.project, urlencode(parameters))
 
-        http = HttpClient(self.args)
+        http = HttpClient(self.args, always=True)
         response = http.get(url)
 
         # noinspection PyBroadException