Add redeployment doc

docs/reference/charm-redeployment.md

@@ -0,0 +1,5 @@
+## Charm Redeployment
+
+If you need to redeploy the [content-cache-k8s](https://charmhub.io/content-cache-k8s) charm, it has no underlying state.
+Hence going through a normal deployment process using the same configuration options and relations
+as your original deployment will suffice.

tests/integration/requirements.txt

@@ -1,7 +1,5 @@
 requests
-pytest-operator
 python-keystoneclient
 python-swiftclient
 Pillow
-pytest
-pytest-cov
+

tox.ini

@@ -105,6 +105,9 @@ commands =
 [testenv:integration]
 description = Run integration tests
 deps =
+    pytest
+    pytest-cov
+    pytest-operator
     # Last compatible version with Juju 2.9
     juju==3.0.4
     -r{toxinidir}/requirements.txt