Adding options to control DIB repo branch

* Added the -m option
* Added detection of variable DIB_REPO_BRANCH
* Added tag 0.1.17 as default branch of DIB repo
* Added exit error if both DIB_REPO_BRANCH and -m are specified

Implements: blueprint dib-repo-branch-option
Change-Id: I44f0689f7844085c39b5560c65024b68c3424ad8
Merge "Adding options to control DIB repo branch"