Fix version number to Juno
Fix version number to Juno

We need to update the version number in setup.cfg, otherwise pbr will
fail with:
"error in setup command: Error parsing /opt/stack/new/manila/setup.cfg:
ValueError: git history requires a target version of
pbr.version.SemanticVersion(2014.2.0.0b4), but target version is
pbr.version.SemanticVersion(2013.2.0)"

Change-Id: I608c1dce0169fe78667e5818f2abff3dc8b11447

weiting-chen/manila,vponomaryov/manila,sajuptpm/manila,redhat-openstack/manila,bswartz/manila,openstack/manila,NetApp/manila,scality/manila,jcsp/manila,NetApp/manila,weiting-chen/manila,openstack/manila,scality/manila,jcsp/manila,sajuptpm/manila,vponomaryov/manila,bswartz/manila,redhat-openstack/manila