Updated openstack/openstack
Project: openstack-dev/devstack  b76a4e62a4fe0223e1d965509fff4542df8672f1

Remove configuration parameter EXTRA_OPTS

According to the comments in stack.sh the configuration parameter
EXTRA_OPTS should be removed during the Juno cycle.

Change-Id: Ic71d38d6f9b8a8949e45ce3321d593ee2f8feb40