Add option to extend the wait for cell-setup-init

In some deployement environments, nova compute processes took a bit
longer to register on all hosts, and vm/server is instantiated almost
immediately before the process is registered on remaining hosts.
This PS enhances the cell-setup-init script to enable option to
extend the wait before performing discover hosts.

Change-Id: Ie9867e64c554d4f39fdc7432823a1869f0b4a520

nova/Chart.yaml

@@ -14,7 +14,7 @@ apiVersion: v1
 appVersion: v1.0.0
 description: OpenStack-Helm Nova
 name: nova
-version: 0.2.22
+version: 0.2.23
 home: https://docs.openstack.org/nova/latest/
 icon: https://www.openstack.org/themes/openstack/images/project-mascots/Nova/OpenStack_Project_Nova_vertical.png
 sources:

nova/templates/bin/_cell-setup-init.sh.tpl

@@ -16,6 +16,34 @@ limitations under the License.
 
 set -ex
 
+{{- if .Values.jobs.cell_setup.extended_wait.enabled }}
+iteration={{ .Values.jobs.cell_setup.extended_wait.iteration }}
+duration={{ .Values.jobs.cell_setup.extended_wait.duration }}
+
+extra_wait=true
+
+while [[ "$extra_wait" == true ]]
+do
+  if [[ -z "$(openstack compute service list --service nova-compute -f value -c State | grep '^down$')" ]]
+  then
+    # No more down
+    extra_wait=false
+  else
+    sleep "$duration"
+
+    if [[ "$iteration" -gt 1 ]]
+    then
+      ((iteration=iteration-1))
+    else
+      extra_wait=false
+
+      # List out the info to see whether any nodes is still down
+      openstack compute service list --service nova-compute
+    fi
+  fi
+done
+{{- end }}
+
 until openstack compute service list --service nova-compute -f value -c State | grep -q "^up$" ;do
   echo "Waiting for Nova Compute processes to register"
   sleep 10

nova/values.yaml

@@ -105,6 +105,10 @@ jobs:
     history:
       success: 3
       failed: 1
+    extended_wait:
+      enabled: false
+      iteration: 3
+      duration: 5
   service_cleaner:
     cron: "0 */1 * * *"
     starting_deadline: 600

releasenotes/notes/nova.yaml

@@ -43,4 +43,5 @@ nova:
   - 0.2.20 Update script to true of grep does get anything.
   - 0.2.21 Helm 3 - Fix Job Labels
   - 0.2.22 Update htk requirements repo
+  - 0.2.23 Add option to enable extra wait for cell-setup-init
 ...