Add .venv to .gitignore
Add .venv to .gitignore

Change-Id: I046ec38145fdc540f2a0cfa63ad640017f92f97c

dtroyer/python-openstacksdk,mtougeron/python-openstacksdk,briancurtin/python-openstacksdk,stackforge/python-openstacksdk,dudymas/python-openstacksdk,openstack/python-openstacksdk,briancurtin/python-openstacksdk,mtougeron/python-openstacksdk,stackforge/python-openstacksdk,dtroyer/python-openstacksdk,openstack/python-openstacksdk,dudymas/python-openstacksdk