Adding db sync script for venus

The script for database synchronization is missing in the venus-api image,
which makes it impossible to create the required database tables during
venus deployment.

Closes-Bug: #2029915
Change-Id: Ibbf75fa73b8397ea3686b42cec6cad6d8f6d3858
(cherry picked from commit 772de9662c)

docker/venus/venus-api/Dockerfile.j2

@@ -5,6 +5,9 @@ LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build
 
 {% block venus_api_header %}{% endblock %}
 
+COPY extend_start.sh /usr/local/bin/kolla_venus_extend_start
+RUN chmod 644 /usr/local/bin/kolla_venus_extend_start
+
 {% block venus_api_footer %}{% endblock %}
 {% block footer %}{% endblock %}
 

docker/venus/venus-api/extend_start.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+# Bootstrap and exit if KOLLA_BOOTSTRAP variable is set. This catches all cases
+# of the KOLLA_BOOTSTRAP variable being set, including empty.
+if [[ "${!KOLLA_BOOTSTRAP[@]}" ]]; then
+    venus_manager db sync
+    exit 0
+fi

docker/venus/venus-manager/Dockerfile.j2

@@ -5,8 +5,6 @@ LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build
 
 {% block venus_manager_header %}{% endblock %}
 
-RUN chmod 644 /usr/local/bin/kolla_venus_extend_start
-
 {% block venus_manager_footer %}{% endblock %}
 {% block footer %}{% endblock %}