tests: remove flakey spanner_database_info test

The spanner List API is returning intermittent 404s, which
is resulting in the spanner_database test failing every other
time.

Disabling the API until the test is more stable.

.gitignore

@@ -3,3 +3,4 @@ tests/integration/cloud-config-gcp.ini
 # running ansible integration tests adds files here.
 tests/integration/inventory
 tests/output/
+__pycache__

tests/integration/targets/gcp_spanner_database/tasks/autogen.yml

@@ -89,19 +89,23 @@
   assert:
     that:
       - result.changed == true
-- name: verify that database was deleted
-  google.cloud.gcp_spanner_database_info:
-      instance: "{{ instance }}"
-      project: "{{ gcp_project }}"
-      auth_kind: "{{ gcp_cred_kind }}"
-      service_account_file: "{{ gcp_cred_file }}"
-      scopes:
-        - https://www.googleapis.com/auth/spanner.admin
-  register: results
-- name: verify that command succeeded
-  assert:
-    that:
-      - results['resources'] | map(attribute='name') | select("match", ".*webstore.*") | list | length == 0
+# commented out due to a flakey List endpoint
+# on the spanner API. (requests continue to return
+# 404s intermittently).
+# uncomment if it's desired to test the info.
+# - name: verify that database was deleted
+#   google.cloud.gcp_spanner_database_info:
+#       instance: "{{ instance }}"
+#       project: "{{ gcp_project }}"
+#       auth_kind: "{{ gcp_cred_kind }}"
+#       service_account_file: "{{ gcp_cred_file }}"
+#       scopes:
+#         - https://www.googleapis.com/auth/spanner.admin
+#   register: results
+# - name: verify that command succeeded
+#   assert:
+#     that:
+#       - results['resources'] | map(attribute='name') | select("match", ".*webstore.*") | list | length == 0
 # ----------------------------------------------------------------------------
 - name: delete a database that does not exist
   google.cloud.gcp_spanner_database: