This commit introduces the following helm test improvement for the
ceph-client chart:
1) Reworks the pg_validation function so that it allows some time for
peering PGs to finish peering, but fail if any other critical errors are
seen. The actual pg validation was split out into a function called
check_pgs(), and the pg_validation function manages the looping aspects.
2) The check_cluster_status function now calls pv_validation if the
cluster status is not OK. This is very similar to what was happening
before, except now, the logic will not be repeated.
Change-Id: I65906380817441bd2ff9ff9cfbf9586b6fdd2ba7
970c23acf4