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/jjb/voltha-e2e/voltha-2.12.yaml b/jjb/voltha-e2e/voltha-2.12.yaml
index 28e1771..2e9899d 100644
--- a/jjb/voltha-e2e/voltha-2.12.yaml
+++ b/jjb/voltha-e2e/voltha-2.12.yaml
@@ -194,5 +194,5 @@
               flags: ""
               teardown: true
               logging: true
-              
+
 # [EOF]