Refactor verification job templates

 - extract common verification boilerplate definitions and default
   parameters and refer to them in review and merge verification jobs
 - remove unnecessary parameters from templates and from cssdk-csit

Issue-ID: INT-1823, INT-1833
Signed-off-by: Lasse Kaihlavirta <l.kaihlavirt@partner.samsung.com>
Change-Id: I63367216504b997acccd863bad0a2b7de3fc7480
2 files changed