Install latest openstacksdk on bridge

It's designed to always be used from the latest version.

This trips an ansible lint rule (ANSIBLE0010) which we can ignore, as
we often have pip things that we want to install the latest release
of automatically.

Change-Id: Ieac93ab3a555f2423d4fbcf101d6d9681ae0e497

playbooks/roles/install-ansible/tasks/main.yaml

@@ -4,6 +4,7 @@
 
 - name: Install openstacksdk
   pip:
+    state: latest
     name: openstacksdk
 
 - name: Ensure /etc/ansible and /etc/ansible/hosts

tox.ini

@@ -19,9 +19,12 @@ commands =
   python3 {toxinidir}/tools/check_clouds_yaml.py
   python3 -m unittest playbooks/roles/install-ansible/files/inventory_plugins/test_yamlgroup.py
   # Ansible Lint Check
+  #
+  # ANSIBLE0010: Package installs should not use latest
+  #  We often deploy latest pip packages
   bash -c "find roles playbooks -type f -regex '.*.y[a]?ml' -print0 | xargs -t -n1 -0 \
-    ansible-lint -x ANSIBLE0004 -x ANSIBLE0006 -x ANSIBLE0007 -x ANSIBLE0011 \
-                 -x ANSIBLE0012 -x ANSIBLE0013 -x ANSIBLE0015"
+    ansible-lint -x ANSIBLE0004 -x ANSIBLE0006 -x ANSIBLE0007 -x ANSIBLE0010 \
+                 -x ANSIBLE0011 -x ANSIBLE0012 -x ANSIBLE0013 -x ANSIBLE0015"
 
 [testenv:venv]
 commands = {posargs}