Change path to loadbalancer plugin

LoadbalancerPlugin path needs to be changed to reflect renaming
agent_loadbalancer to loadbalancer and moving services directory
one level up.

Change-Id: Ib2ece411b5fb84575673a66421eb474888dd8f43
Merge "Change path to loadbalancer plugin"
Merge remote-tracking branch 'm_src_repo/citrix-fixes' into build-temp