repo:voltha-protos -- makefile clean target creates residue

% git remote -v show

origin  ssh://gerrit.opencord.org:29418/voltha-protos.git (fetch)
origin  ssh://gerrit.opencord.org:29418/voltha-protos.git (push)

The voltha-proto repository requires some bootstrapping in the form of needing a copy of golang api code, etc on disk.  A copy of the go directory has been checked in which creates a few oddities:

• We have duplication, non-maintainable code placed under VCS.
• The makefile clean target removes source under version control.

% make clean

% git status

Changes not staged for commit:
 (use "git add/rm <file>..." to update what will be committed)
 (use "git restore <file>..." to discard changes in working directory)
       deleted:    go/adapter_service/adapter_service.pb.go
       deleted:    go/common/common.pb.go
       deleted:    go/core/core.pb.go
       deleted:    go/core_adapter/core_adapter.pb.go
       deleted:    go/core_service/core_services.pb.go
       deleted:    go/ext/config/ext_config.pb.go
       deleted:    go/extension/extensions.pb.go
       deleted:    go/health/health.pb.go
       deleted:    go/ietf/ietf_interfaces.pb.go
       deleted:    go/inter_adapter/inter_adapter.pb.go

Another voltha-go based repository exhibited similar behavior but failed outright to build:

% make clean

% make

BOOM

Look into augmenting makefile target and convert the logic into a dependency.  When go/* sources do not exist checkout a tagged copy from google(s) original source repository VS copying files locally and placing them under version control allowing make to create funky sandbox state.