toolbox: Add sleep script handling signals

Closes-Bug: #2031692

Change-Id: I8b69869cca98d83d3b1be3f4add88ff83b22b4a1

docker/kolla-toolbox/Dockerfile.j2

@@ -92,10 +92,12 @@ COPY find_disks.py /usr/share/ansible/
 COPY ansible.cfg /etc/ansible/ansible.cfg
 COPY ansible_sudoers /etc/sudoers.d/kolla_ansible_sudoers
 COPY extend_start.sh /usr/local/bin/kolla_extend_start
+COPY kolla_toolbox.sh /usr/local/bin/kolla_toolbox
 
 RUN chmod 644 /usr/share/ansible/find_disks.py \
               /etc/ansible/ansible.cfg \
               /usr/local/bin/kolla_extend_start \
+    && chmod 755 /usr/local/bin/kolla_toolbox \
     && chmod 440 /etc/sudoers.d/kolla_ansible_sudoers
 
 {% block kolla_toolbox_footer %}{% endblock %}

docker/kolla-toolbox/kolla_toolbox.sh

@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+
+catch_term() {
+    exit 0
+}
+
+catch_quit() {
+    exit 0
+}
+
+trap catch_term SIGTERM
+trap catch_quit SIGQUIT
+
+while :; do
+    sleep 1
+done