repo:voltha-northbound-bbf-adapter edits

Misc edits needed to support consistent behavior across repositories:

1. Remove vendor/ directory from revision control:
   1. augment to retrieve and install based on dependencies (existence)
   2. vendor/ existence in VCS contributes to a variety of problems.
   3. building locally, target mod-update.  mod-update will remove the vendor directory as step one.  If mod-update (~tidy) fails the sandbox is left in an unbuildable state due to git status showing vendor/ has been deleted (manual fix: git checkout vendor/).
   4. This problem disappears when vendor is removed.
   5. Makefile bootstrap logic should retrieve and install the vendor/ directory when it does not exist.
2. update copyright notice in source to std notice (may be done already)
3. run gofmt -s -w on all golang sources
4. Copy in library makefiles/ logic from onf-make
   1. https://github.com/opencord/onf-make
   2. inlined docker logic contains a problem that inhibits jenkins logging container output during a job run.
   3. targets covered: lint, lint-dockerfile, lint-golang,
   4. targets pending/may already have been added in onf-make:
      1. lint-mod
      2. sca
      3. mod-update
      4. ...

Oh also several repositories share this identical problem.

Dependency logic should be library based/reusable not anchored to a single repository.