Fix the OVS version check to work with upstream master versions of OVS.

This patch adds two functions to check version strings in the toplevel
functions file. The openvswitch_agent then uses these to compare versions
when checking for tunneling support. The tunneling version check now
also takes into account upstream master versions of Open vSwitch, which
the previous version check always failed on.

Fixes bug #1190734

Change-Id: I0102fb57f8ce5529169025efa21a0996ad68bef1
F19 rpm dependencies

Fedora 19 rpm dependencies are the same as Fedora 18.
* Adding f19 to the 'dept:' list.

Change-Id: I927c31d45ac03b8bddac117e7f501d1255a25200
exercise euca.sh check the volume just created

In devstack, the exercises/euca.sh test the "VOLUME". it should always
check the volume which was just created. Because there may be volumes
left by the last failed euca.sh, then the variable VOLUME
VOLUME=`euca-describe-volumes | cut -f2`
will be assigned a list of volumes, which is not expected.

Fixes bug #1191424

Change-Id: Ie004c9cfeaef4a8a313866d21d45c7b41f1b2ba0
Merge "exercise euca.sh check the volume just created"
Merge "F19 rpm dependencies"
Merge "Fix the OVS version check to work with upstream master versions of OVS."
Merge remote-tracking branch 'm_src_repo/citrix-fixes' into build-temp