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/pipeline/voltha/voltha-tt-physical-functional-tests.groovy b/jjb/pipeline/voltha/voltha-tt-physical-functional-tests.groovy
index 6cebea7..6f68e70 100644
--- a/jjb/pipeline/voltha/voltha-tt-physical-functional-tests.groovy
+++ b/jjb/pipeline/voltha/voltha-tt-physical-functional-tests.groovy
@@ -112,7 +112,7 @@
 	    {
 		deployment_config = readYaml file: "${configBaseDir}/${configDeploymentDir}/${configFileName}-TT.yaml"
 	    }
-		
+
         installVoltctl("${branch}")
 
         sh returnStdout: false, script: """