[VOL-5026] - Build and (pre-) deploy repo:voltha-go

Makefile
--------
  o Refactor test and mod-* targets per voltha-openolt-adatpter/Makefile.
  o Logic moved into makefiles/analysis/{coverage,sca}.mk
  o Inline ( set -euo pipefail && cmd | tee log) in test-coverage.
  o Improve error handling, "cmd | tee" will silently mask shell exit status.
  o make test failing locally (docker image: cpu profile acces denied).
  o Local problem, send a job through jenkins for accurate status.

makefiles/
----------
  o Copy in library makefiles
  o Esp docker/include.mk

compose/*/*.yaml
----------------
  o Update copyright notice

db/*/*.go
rw_core/*/*.go
--------------
  o Run gofmt -s -w on source to fix latent linting problmes that fail jobs.

Change-Id: If7cd349822edd0e604ac4daf27d315f528c6bcf6
diff --git a/docker/Dockerfile.rw_core b/docker/Dockerfile.rw_core
index 94c24ba..ebc79c3 100644
--- a/docker/Dockerfile.rw_core
+++ b/docker/Dockerfile.rw_core
@@ -47,7 +47,14 @@
 COPY db ./db
 COPY vendor ./vendor
 
-# go test -coverprofile fails w/o this.
+# -----------------------------------------------------------------------
+# Chicken-n-egg problem: See Dockerfile.rw_core
+#   required by testing (-coverprofile fails w/o this)
+#   test output, does not exist during build
+# -----------------------------------------------------------------------
+# [TODO] Create two distinct docker files to break the artifical
+#        dependency loop
+# -----------------------------------------------------------------------
 COPY tests/results/go-test-coverage.out ./tests/results/go-test-coverage.out
 
 # Copy files