Pin a specific version of airshipctl to vino

* with master branch there are more chances that any recent change to airshipctl
  might break vino.
* Tagging a specific stable release of airshipctl as dependent repo to vino

Change-Id: I052af6345e955689a34d932ba80bf1d226ef2e6a

tools/deployment/configure-airship.sh

@@ -4,6 +4,7 @@ set -xe
 
 : ${MANIFEST_DIR:="${HOME}/vino-manifests"}
 : ${VINO_REPO_URL:="/${HOME}/airship/vino"}
+AIRSHIPCTL_RELEASE=${AIRSHIPCTL_RELEASE:-"v2.0.0"}
 
 mkdir -p "${MANIFEST_DIR}"
 
@@ -29,3 +30,11 @@ airshipctl config set-manifest default \
     --branch master
 
 airshipctl document pull -n
+
+
+# pinning airshipctl to a specific tag
+# git checkout is manually done here as a workaround to checkout a specific version of airshipctl.
+# `airshipctl document pull -n` does not respect branch/tag
+# -n is required for vino while a specific tag is required for airshipctl
+cd ${MANIFEST_DIR}/airshipctl
+git checkout ${AIRSHIPCTL_RELEASE}