ceph helm: broken check-mon bash script

[yann degat]

the `openstack-helm-infra/ceph-mon/templates/bin/mon/_check.sh.tpl`

is broken with an undefined var:

```
if [ -S "${SOCKDIR}/${SBASE}.${MON_NAME}.${SSUFFIX}" ]; then
   MON_STATE=$(ceph -f json-pretty --connect-timeout 1 --admin-daemon "${sock}" mon_status|grep state|sed 's/.*://;s/[^a-z]//g')
 ...
  fi
```

${sock} is undefined.
it should be defined to the `${SOCKDIR}/${SBASE}.${MON_NAME}.${SSUFFIX}`
value

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/612059

[Matthew Heler (mheler)]

https://review.openstack.org/#/c/612059/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/612059
Committed: https://git.openstack.org/cgit/openstack/openstack-helm-infra/commit/?id=154fcd894f5385ca43a4229d5ad738f093853e77
Submitter: Zuul
Branch: master

commit 154fcd894f5385ca43a4229d5ad738f093853e77
Author: Matthew Heler <email address hidden>
Date: Sat Oct 20 10:03:57 2018 -0500

    Use the correct socket file for the Ceph mon check.

    Change-Id: If8c40c3c0501b78db88d3a7f33bf3838c0e60199
    Closes-Bug: 1796313