[ceph-client] Handle multiple mon versions in the pool job

The mon version check in the rbd-pool job can cause the script to
error and abort if there are multiple mon versions present in the
Ceph cluster. This change chooses the lowest-numbered major version
from the available mon versions when performing the version check
since the check is performed in order to determine the right way to
parse JSON output from a mon query.

Change-Id: I51cc6d1de0034affdc0cc616298c2d2cd3476dbb

ceph-client/Chart.yaml

@@ -15,6 +15,6 @@ apiVersion: v1
 appVersion: v1.0.0
 description: OpenStack-Helm Ceph Client
 name: ceph-client
-version: 0.1.34
+version: 0.1.35
 home: https://github.com/ceph/ceph-client
 ...

ceph-client/templates/bin/pool/_init.sh.tpl

@@ -49,7 +49,7 @@ function wait_for_pgs () {
   pgs_ready=0
   query='map({state: .state}) | group_by(.state) | map({state: .[0].state, count: length}) | .[] | select(.state | contains("active") or contains("premerge") | not)'
 
-  if [[ $(ceph mon versions | awk '/version/{print $3}' | cut -d. -f1) -ge 14 ]]; then
+  if [[ $(ceph mon versions | awk '/version/{print $3}' | sort -n | head -n 1 | cut -d. -f1) -ge 14 ]]; then
     query=".pg_stats | ${query}"
   fi
 

releasenotes/notes/ceph-client.yaml

@@ -35,4 +35,5 @@ ceph-client:
   - 0.1.32 Simplify test rules for ceph-mgr deployment
   - 0.1.33 More robust naming of clusterrole-checkdns
   - 0.1.34 Migrated CronJob resource to batch/v1 API version
+  - 0.1.35 Handle multiple mon versions in the pool job
 ...