Configure the OVS datapath type with devstack.

This feature provides the user with a means of easily configuring
the required Openvswitch datapath type. (Netdev, dpdk, etc)

Define the OVS_DATAPATH_TYPE variable in the devstack configuration file
local.conf.

This feature enables Intel(R) DPDK vSwitch and netdev DPDK vhost.

Implements blueprint config-ovs-datapath-type

Change-Id: I5698720960b1ac532c790d3e5735c5cef36d5e3d
Add support for ironicclient bash completion

This commit adds statement to copy the file /ironic.bash_completion
file to the default bash completion directory.

Change-Id: I436d46dbac0895a8ca14d085fec041981435936c
Merge "Add support for ironicclient bash completion"
Merge "Configure the OVS datapath type with devstack."