Misc cleanups, add installer for lint-groovy

makefiles/npm/README.md
makefiles/npm/include.mk
makefiles/npm/nvm.mk
makefiles/npm/npm.mk
-------------------------
  o Genreate targets and deps for installing tools nvm, npm and npm-groovy-lint.
  o Tools are intended for interactive use.
  o npm-groovy-lint is a dependency for the lint-groovy target

config.mk
.gitignore
----------
  o Add exclusion lf/onf-make for repo:onf-make git submodule.
  o Add exclusion for .tmp (makefiles/nvm/nvm.mk)

makefiles/lint/groovy/groovy.mk
makefiles/lint/groovy/include.mk
makefiles/lint/groovy/install.mk
--------------------------------
  o Update targets to latest lint-{language}-{all,mod,src} syntax.
  o Installer updated to depend on npm/nvm.mk target 'npm-groovy-install'.

makefiles/lint/make/makefile.mk
makefiles/lint/json.mk
makefiles/lint/python/flake8.mk
makefiles/lint/shell/shellcheck.mk
makefiles/lint/yaml.mk
------------------------
  o Simplify find command exclusions.
  o Use "-not -path [p]" in place of "( -name p ) -prune".

makefiles/main/tempdir/tempdir.mk
---------------------------------
  o Fixed a typo $(HELP) -> $(HIDE)

makefiles/lint/doc8/doc8.ini
-------------------------------
  o Add directory exclusions from onf-excl-dir=.
  o Remove txt from the list of file extensions to check
    repo:voltha-docs is the only repo with *.txt files that contain
    restructuredText so add the extension in the local per-repository
    config.

Signed-off-by: Joey Armstrong <jarmstrong@linuxfoundation.org>
Change-Id: Ia2e091d812af82063c79ed855bc7dd4f5ec8f706
diff --git a/makefiles/lint/shell/shellcheck.mk b/makefiles/lint/shell/shellcheck.mk
index 1bbb850..7d94998 100644
--- a/makefiles/lint/shell/shellcheck.mk
+++ b/makefiles/lint/shell/shellcheck.mk
@@ -29,8 +29,9 @@
 
 # Gather sources to check
 shell-check-find := find .
-shell-check-find += -name 'vendor' -prune
-shell-check-find += -o \( -name '*.sh' -o -name '*.bash' \)
+shell-check-find += $(foreach dir,$(onf-excl-dirs),-not -path './$(dir)/*')
+shell-check-find += -not -path './vendor/*'
+shell-check-find += -a \( -name '*.sh' -o -name '*.bash' \)
 shell-check-find += -type f -print0
 
 # shell-check    := $(env-clean) shellcheck