Add support for pre-commit hook/linting

.pre-commit-config.yaml
-----------------------
  o Create initial config for pre-commit hook.

misc/*
  o Basic inline cleanups courtesy of the pre-commit hook.

Signed-off-by: Joey Armstrong <jarmstrong@linuxfoundation.org>
Change-Id: I6aa20216ade22b1a7406e8358864fb245842b713
diff --git a/requirements.txt b/requirements.txt
index 7b561ae..957764d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,6 +7,7 @@
 jenkins-jobs
 
 bashate
+pre-commit
 
 # Installed on-demand by makefiles/lint/python/{flake8,pylint,tox}.mk
 # pylint