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-physical-functional-tests.groovy b/jjb/pipeline/voltha/voltha-physical-functional-tests.groovy
index 61c85b6..3aa50e8 100644
--- a/jjb/pipeline/voltha/voltha-physical-functional-tests.groovy
+++ b/jjb/pipeline/voltha/voltha-physical-functional-tests.groovy
@@ -106,7 +106,7 @@
           deployment_config = readYaml file: "${configBaseDir}/${configDeploymentDir}/${configFileName}.yaml"
         }
 	installVoltctl("${branch}")
-	
+
 	sh(returnStdout: false, script: """
 
         mkdir -p "$WORKSPACE/bin"