tests/e2e: Update requests package

- Due to a bug in requests 2.29.0 we need to downgrade it
to avoid the error:
`Error while fetching server API version: request() got an
unexpected keyword argument 'chunked'`
- See docker/docker-py#3113

Fixes: confidential-containers#206
Signed-off-by: stevenhorsman <steven@uk.ibm.com>

tests/e2e/ansible/start_docker_registry.yml

@@ -21,6 +21,12 @@
     - name: Install docker pip
       pip:
         name: docker
+    # Due to a bug in requests 2.29.0 we need to downgrade it
+    # see https://github.com/docker/docker-py/issues/3113 
+    - name: Downgrade requests
+      pip: 
+        name: requests
+        version: 2.28.1
     - name: Start a docker registry
       docker_container:
         name: "{{ local_registry_name }}"