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/shell/common/README.md b/jjb/shell/common/README.md
index 07d5e70..82fef33 100644
--- a/jjb/shell/common/README.md
+++ b/jjb/shell/common/README.md
@@ -30,5 +30,3 @@
 source common/common.sh
 source common/common.sh --tempdir
 source common/common.sh --traputils --stacktrace
-
-
diff --git a/jjb/shell/common/common/sh/tempdir.sh b/jjb/shell/common/common/sh/tempdir.sh
index 40d842e..417cb6d 100644
--- a/jjb/shell/common/common/sh/tempdir.sh
+++ b/jjb/shell/common/common/sh/tempdir.sh
@@ -31,13 +31,13 @@
 function common_tempdir_mkdir()
 {
     local var="$1"; shift
-    
+
     local pkgbase="${0##*/}" # basename
     local pkgname="${pkgbase%.*}"
 
     local __junk__
     local __junk__="$(mktemp -d -t "${pkgname}.XXXXXXXXXX")"
-    
+
     __COMMON_TEMP_DIRS__+=("$__junk__")
 
     export TMPDIR="$__junk__"
diff --git a/jjb/shell/common/common/sh/traputils.sh b/jjb/shell/common/common/sh/traputils.sh
index ded5cc7..cf51f8a 100644
--- a/jjb/shell/common/common/sh/traputils.sh
+++ b/jjb/shell/common/common/sh/traputils.sh
@@ -44,18 +44,18 @@
 {
     local new_trap="$1"; shift
     declare -a sigs=($*)
-    
+
     # local sigs=$*
     local sig
     for sig in "${sigs[@]}";
     do
 	    local stack_name="$(trap_stack_name "$sig")"
 	    local old_trap="$(get_trap "$sig")"
-        
+
 	    # eval '__trap_stack_SIGUSR1[${#__trap_stack_SIGUSR1[@]}]=$old_trap'
 	    # __trap_stack_SIGUSR1[${#__trap_stack_SIGUSR1[@]}]=one
 	    # trap two SIGUSR1
-        
+
 	    eval "${stack_name}"'[${#'"${stack_name}"'[@]}]=$old_trap'
 	    trap "${new_trap}" "$sig"
     done
diff --git a/jjb/shell/common/example.sh b/jjb/shell/common/example.sh
index 0c0e46a..ada12ae 100755
--- a/jjb/shell/common/example.sh
+++ b/jjb/shell/common/example.sh
@@ -54,7 +54,7 @@
 # foo: hello - stack_frame[1]
 # bar: hello - stack_frame[2]
 # tans: early exit for stacktrace
-# 
+#
 # OFFENDER: ./example.sh:1
 # ERROR: 'exit 1' exited with status 1
 # Call tree:
diff --git a/jjb/shell/github-release.sh b/jjb/shell/github-release.sh
index fec3872..dddfe0c 100755
--- a/jjb/shell/github-release.sh
+++ b/jjb/shell/github-release.sh
@@ -504,7 +504,7 @@
 {
     local -n ref=$1; shift
     local varpath="$ref"
-    
+
     DEST_GOPATH=${DEST_GOPATH:-}
     if [ -n "$DEST_GOPATH" ]; then
         mkdir -p "$GOPATH/src/$DEST_GOPATH"
@@ -939,9 +939,9 @@
 ## -----------------------------------------------------------------------
 function my_gh()
 {
-    func_echo "ENTER"    
+    func_echo "ENTER"
     set -x
- 
+
     declare -a cmd=()
     cmd+=("$gh_cmd")
 
@@ -958,7 +958,7 @@
         case "$arg" in
 
             # Modes
-            -*debug)	
+            -*debug)
 		# shellcheck disable=SC2034
 		declare -i -g debug=1
 		;;