Remove duplicate code in heat extend_start.sh

Change-Id: I8970d02ccbed1dfc221683e273edc2680207056b
Partial-Bug: #1546944

docker/heat/heat-api/Dockerfile.j2

@@ -16,8 +16,8 @@ RUN apt-get install -y --no-install-recommends \
     {% endif %}
 {% endif %}
 
-COPY extend_start.sh /usr/local/bin/kolla_extend_start
-RUN chmod 755 /usr/local/bin/kolla_extend_start
+COPY extend_start.sh /usr/local/bin/kolla_heat_extend_start
+RUN chmod 755 /usr/local/bin/kolla_heat_extend_start
 
 {{ include_footer }}
 

docker/heat/heat-api/extend_start.sh

 #!/bin/bash
 
-if [[ ! -d "/var/log/kolla/heat" ]]; then
-    mkdir -p /var/log/kolla/heat
-fi
-if [[ $(stat -c %a /var/log/kolla/heat) != "755" ]]; then
-    chmod 755 /var/log/kolla/heat
-fi
-
 # Bootstrap and exit if KOLLA_BOOTSTRAP variable is set. This catches all cases
 # of the KOLLA_BOOTSTRAP variable being set, including empty.
 if [[ "${!KOLLA_BOOTSTRAP[@]}" ]]; then

docker/heat/heat-base/Dockerfile.j2

@@ -30,4 +30,5 @@ RUN ln -s heat-base-source/* heat \
 COPY extend_start.sh /usr/local/bin/kolla_extend_start
 
 RUN usermod -a -G kolla heat \
-    && chmod 755 /usr/local/bin/kolla_extend_start
+    && touch /usr/local/bin/kolla_heat_extend_start \
+    && chmod 755 /usr/local/bin/kolla_extend_start /usr/local/bin/kolla_heat_extend_start

docker/heat/heat-base/extend_start.sh

@@ -6,3 +6,5 @@ fi
 if [[ $(stat -c %a /var/log/kolla/heat) != "755" ]]; then
     chmod 755 /var/log/kolla/heat
 fi
+
+source /usr/local/bin/kolla_heat_extend_start