Retry request if we receive 503 (Service unavailable) upto a default limit
Improve test
Renaming variables
Addressing PR comments
PR comments
Merge pull request #766 from caskdata/feature/startandwait-service

CDAP-812: Feature/startandwait service
Backport caskdata/cdap#767 for Docker support
Merge pull request #777 from caskdata/feature/docker-cdap26

Backport caskdata/cdap#767 for Docker support
Merge branch 'release/2.6.0' into feature/r2.6.0_doc_fixes