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/vars/getVolthaCode.groovy b/vars/getVolthaCode.groovy
index 23b373d..aecb30d 100644
--- a/vars/getVolthaCode.groovy
+++ b/vars/getVolthaCode.groovy
@@ -188,7 +188,7 @@
             sh """
         cd "$WORKSPACE/voltha-helm-charts"
         git fetch "$repo_vhc" ${cfg.volthaHelmChartsChange} && git checkout FETCH_HEAD
-      """ 
+      """
             leave("git fetch repo_vhc=[$repo_vhc]")
         }
         else if (cfg.gerritProject == 'voltha-helm-charts') {