Exclude openstack-common from pep8 checks.

Updates tox.ini and run_tests.sh to exclude openstack-common code
from pep8 checks.

Fixes LP Bug #1020792

Change-Id: I6bb9747f86f7677f0e9c4169c04d6f3fbd4b3480

run_tests.sh

@@ -107,7 +107,7 @@ function run_pep8 {
   #                when running on devstack.
   # NOTE(lzyeval): Avoid selecting *.pyc files to reduce pep8 check-up time
   #                when running on devstack.
-  srcfiles=`find nova -type f -name "*.py"`
+  srcfiles=`find nova -type f -name "*.py" ! -wholename "nova\/openstack*"`
   srcfiles+=" `find bin -type f ! -name "nova.conf*" ! -name "*api-paste.ini*"`"
   srcfiles+=" `find tools -type f -name "*.py"`"
   srcfiles+=" setup.py"

tox.ini

@@ -18,7 +18,7 @@ downloadcache = ~/cache/pip
 
 [testenv:pep8]
 deps = pep8==1.1
-commands = python tools/hacking.py --ignore=N4 --repeat --show-source --exclude=.venv,.tox,dist,doc,*egg .
+commands = python tools/hacking.py --ignore=N4 --repeat --show-source --exclude=.venv,.tox,dist,doc,openstack,*egg .
 
 [testenv:cover]
 setenv = NOSE_WITH_COVERAGE=1