This commit adds a retry logic for mount when it fails on the
first try on subclouds.
Test Plan:
[PASS] Installed in-service patch in DC env
Story: 2010676
Task: 49169
Change-Id: I5b1c959f966b7ac2622f315c1aac35d85d4b463c
Signed-off-by: Jessica Castelino <jessica.castelino@windriver.com>