Support installing openvswitch from source

[sean mooney]

currently the openvswitch container always install openvswitch from the package manager.
extending support to install openvswitch from source will enable more advanced deployments to utilizes
features only present in a more recent ovs.

example use
networking-sfc requires 2.3
networking-ovn uses master
the ovs contrack security group driver requires 2.5
the learn action security group driver requires 2.4

in addition to the above uses i would like to make this change as a first step to enable deploying
ovs with dpdk in the future with kolla.

As deploying ovs with dpdk has addtional complexity i would like to propose this RFE bug to simply install vanilla ovs first
and cater for ovs with dpdk support as part of a separate RFE bug / blueprint as appropriate.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/275932

[OpenStack Infra (hudson-openstack)]

Change abandoned by sean mooney (<email address hidden>) on branch: master
Review: https://review.openstack.org/275932
Reason: it is too late in the cycle to consider this change so abandoning until newton.

[Sam Yaple (s8m)]

This would require a blueprint at teh very least. But if I recall I believe the contention was with installing from source non-openstack projects which we never planned to do in the first place.

[sean mooney (sean-k-mooney)]

the version s i wanted to use are now available in distros so the immediate need for source installs has diminished.
i will close this for now and we can revisit at a later date if we chose to support this in the future.