Bump AgentExtRpcCallback version to 1.1
Bump AgentExtRpcCallback version to 1.1

Id28248f4f75821fbacf46e2c44e40f27f59172a9 modified report_state server
side API (returning agent state instead of None). Callers may want to
rely on that particular behaviour, so probably version bump is
justified.

Change-Id: I19edaa27181bffbd5c6482002829cea2acb52622

klmitch/neutron,openstack/neutron,wolverineav/neutron,huntxu/neutron,mahak/neutron,noironetworks/neutron,wolverineav/neutron,cloudbase/neutron,huntxu/neutron,openstack/neutron,noironetworks/neutron,sebrandon1/neutron,igor-toga/local-snat,MaximNevrov/neutron,openstack/neutron,mahak/neutron,eayunstack/neutron,bigswitch/neutron,dims/neutron,mahak/neutron,klmitch/neutron,sebrandon1/neutron,eayunstack/neutron,igor-toga/local-snat,dims/neutron,MaximNevrov/neutron,bigswitch/neutron,cloudbase/neutron