Update the test path for plugins

The plugin path was using the ansible root however to allow the plugins
to be loaded as a dependency it needs to be in the roles path, which is
handled in the integratged gate. This change pulls our test repo in
allignment with the integrated repo.

Change-Id: I0c914e2430ee609a6093482834eb145c3894dd42
Signed-off-by: Kevin Carter <kevin.carter@rackspace.com>

test-ansible-env-prep.sh

@@ -180,6 +180,9 @@ if [ ! -d "${ANSIBLE_ROLE_DEP_DIR}" ] && [ -f "${ANSIBLE_ROLE_REQUIREMENTS_PATH}
    ansible-playbook -i ${ANSIBLE_INVENTORY} \
          ${COMMON_TESTS_PATH}/get-ansible-role-requirements.yml \
          -v
+   if [[ ! -e "${ANSIBLE_ROLE_DEP_DIR}/plugins" ]]; then
+     ln -s "${ANSIBLE_PLUGIN_DIR}" "${ANSIBLE_ROLE_DEP_DIR}/plugins"
+   fi
 fi