1. Separate the pep8 check from the pylint check

a. This allows them to be run as different tools (if desired)
2. Adjust the makefile to have a 'make pep8' section which can run this new script

Makefile

@@ -4,6 +4,9 @@ PY_FILES+="bin/cloud-init"
 
 all: test
 
+pep8:
+	$(CWD)/tools/run-pep8 $(PY_FILES)
+
 pylint:
 	$(CWD)/tools/run-pylint $(PY_FILES)
 
@@ -20,5 +23,5 @@ clean:
 	rm -rf /var/log/cloud-init.log \
 		   /var/lib/cloud/
 
-.PHONY: test pylint pyflakes 2to3 clean
+.PHONY: test pylint pyflakes 2to3 clean pep8
 

tools/run-pep8

@@ -0,0 +1,28 @@
+#!/bin/bash
+
+ci_files='cloud*.py cloudinit/*.py cloudinit/config/*.py'
+test_files=$(find tests -name "*.py")
+def_files="$ci_files $test_files"
+
+if [ $# -eq 0 ]; then
+   files=( )
+   for f in $def_files; do
+      [ -f "$f" ] || { echo "failed, $f not a file" 1>&2; exit 1; }
+      files[${#files[@]}]=${f}
+   done
+else
+   files=( "$@" );
+fi 
+
+cmd=(
+    pep8
+
+    --ignore=E501 # Line too long (these are caught by pylint)
+
+    "${files[@]}"
+)
+
+echo -e "\nRunning pep8:"
+echo "${cmd[@]}"
+"${cmd[@]}"
+