and incorporate in ceph-osd testing.
This parameter is used by helm test to check if a set % of OSDs
out of the total are considered in & up. Adjusting to 75% and
adding to helm-test.sh for ceph-osd along with more robust
ceph osd validation function
Change-Id: Ib1f37b901f8656f0c6f2ed6a3ec27f0357e82278