Support to test non-dev guest image in CI

Make the job non-voting because it may fail when the guest agent code
changes.

Change-Id: Ibd595b5b5c02cf72f1e5f05c79469cd4cb15a3ca

.zuul.yaml

@@ -27,6 +27,8 @@
             voting: false
         - trove-tempest-ipv6-only:
             voting: false
+        - trove-functional-mysql-nondev:
+            voting: false
     gate:
       queue: trove
       jobs:
@@ -144,6 +146,18 @@
       trove_test_group: 'mysql'
       trove_test_datastore_version: '5.7'
 
+- job:
+    name: trove-functional-mysql-nondev
+    parent: trove-devstack-base
+    vars:
+      devstack_localrc:
+        TROVE_RESIZE_TIME_OUT: 1800
+        TROVE_NON_DEV_IMAGE_URL_MYSQL: https://tarballs.opendev.org/openstack/trove/images/trove-master-mysql-ubuntu-xenial.qcow2
+      trove_resize_time_out: 1800
+      trove_test_datastore: 'mysql'
+      trove_test_group: 'mysql'
+      trove_test_datastore_version: '5.7'
+
 - job:
     name: trove-grenade
     parent: trove-legacy-dsvm-base

devstack/plugin.sh

@@ -447,20 +447,29 @@ function create_guest_image {
         return 0
     fi
 
-    echo "Starting to create guest image..."
-
-    TROVE_BRANCH=${TROVE_BRANCH} $DEST/trove/integration/scripts/trovestack \
-      build-image \
-      ${TROVE_DATASTORE_TYPE} \
-      ${TROVE_IMAGE_OS} \
-      ${TROVE_IMAGE_OS_RELEASE} \
-      true
-
     image_name="trove-datastore-${TROVE_IMAGE_OS}-${TROVE_IMAGE_OS_RELEASE}-${TROVE_DATASTORE_TYPE}"
+    image_url_var="TROVE_NON_DEV_IMAGE_URL_${TROVE_DATASTORE_TYPE^^}"
+    image_url=`eval echo '$'"$image_url_var"`
+    mkdir -p $HOME/images
     image_file=$HOME/images/${image_name}.qcow2
+
+    if [[ -n ${image_url} ]]; then
+        echo "Downloading guest image from ${image_url}"
+        curl -sSL ${image_url} -o ${image_file}
+    else
+        echo "Starting to create guest image"
+
+        TROVE_BRANCH=${TROVE_BRANCH} $DEST/trove/integration/scripts/trovestack \
+          build-image \
+          ${TROVE_DATASTORE_TYPE} \
+          ${TROVE_IMAGE_OS} \
+          ${TROVE_IMAGE_OS_RELEASE} \
+          true
+    fi
+
     if [ ! -f ${image_file} ]; then
         echo "Image file was not found at ${image_file}"
-        return 1
+        exit 1
     fi
 
     echo "Add the image to glance"

devstack/settings

@@ -90,3 +90,4 @@ CELLSV2_SETUP=singleconductor
 
 # Enable or disable the Trove guest image build during devstack installation.
 TROVE_ENABLE_IMAGE_BUILD=${TROVE_ENABLE_IMAGE_BUILD:-"true"}
+TROVE_NON_DEV_IMAGE_URL_MYSQL=${TROVE_NON_DEV_IMAGE_URL_MYSQL:-""}