Use disable_vendor_agent flags in create_image
Use disable_vendor_agent flags in create_image

By default, if you're creating an image by uploading it with glance, it
means you either made it yourself or you downloaded from somewhere like
Ubuntu or Fedora. In neither case are you likely to have special
vendor-specific agents in your image. If you DO have them, you know what
you're doing and can flip a flag.

Change-Id: I9cacfc0284f196f2f65494382ceb0d4e130f9fb2

stackforge/python-openstacksdk,jsmartin/shade,stackforge/python-openstacksdk,openstack/python-openstacksdk,dtroyer/python-openstacksdk,openstack-infra/shade,jsmartin/shade,openstack-infra/shade,openstack/python-openstacksdk,dtroyer/python-openstacksdk