Stop using deprecated DEFAULT group for lock_path
Stop using deprecated DEFAULT group for lock_path

While we set the configuration option in DEFAULT section, we get the
following deprecation message in our logs:

WARNING oslo_config.cfg [-] Option "lock_path" from group "DEFAULT" is
deprecated. Use option "lock_path" from group "oslo_concurrency".

Switch to the new configuration option location.

Change-Id: I89783cc975a4a845ee57920d83236d6eb698af9c

silenci/neutron,dhanunjaya/neutron,MaximNevrov/neutron,chitr/neutron,huntxu/neutron,JianyuWang/neutron,vivekanand1101/neutron,igor-toga/local-snat,adelina-t/neutron,JioCloud/neutron,paninetworks/neutron,javaos74/neutron,vivekanand1101/neutron,openstack/neutron,SamYaple/neutron,bigswitch/neutron,takeshineshiro/neutron,watonyweng/neutron,eonpatapon/neutron,pnavarro/neutron,wolverineav/neutron,SmartInfrastructures/neutron,javaos74/neutron,yuewko/neutron,mandeepdhami/neutron,klmitch/neutron,yanheven/neutron,JioCloud/neutron,bgxavier/neutron,mahak/neutron,takeshineshiro/neutron,openstack/neutron,jerryz1982/neutron,yuewko/neutron,SmartInfrastructures/neutron,shahbazn/neutron,watonyweng/neutron,bgxavier/neutron,miyakz1192/neutron,yanheven/neutron,eayunstack/neutron,Stavitsky/neutron,aristanetworks/neutron,jacknjzhou/neutron,MaximNevrov/neutron,infobloxopen/neutron,adelina-t/neutron,Stavitsky/neutron,wenhuizhang/neutron,pnavarro/neutron,mahak/neutron,apporc/neutron,NeCTAR-RC/neutron,mattt416/neutron,noironetworks/neutron,aristanetworks/neutron,dhanunjaya/neutron,jumpojoy/neutron,suneeth51/neutron,infobloxopen/neutron,asgard-lab/neutron,openstack/neutron,neoareslinux/neutron,mandeepdhami/neutron,skyddv/neutron,glove747/liberty-neutron,barnsnake351/neutron,mmnelemane/neutron,dims/neutron,eonpatapon/neutron,silenci/neutron,glove747/liberty-neutron,eayunstack/neutron,neoareslinux/neutron,swdream/neutron,sebrandon1/neutron,klmitch/neutron,cisco-openstack/neutron,jerryz1982/neutron,wenhuizhang/neutron,paninetworks/neutron,cloudbase/neutron,huntxu/neutron,SamYaple/neutron,antonioUnina/neutron,dims/neutron,sasukeh/neutron,suneeth51/neutron,miyakz1192/neutron,mattt416/neutron,shahbazn/neutron,cisco-openstack/neutron,igor-toga/local-snat,sasukeh/neutron,sebrandon1/neutron,asgard-lab/neutron,swdream/neutron,cloudbase/neutron,JianyuWang/neutron,NeCTAR-RC/neutron,mahak/neutron,jacknjzhou/neutron,barnsnake351/neutron,noironetworks/neutron,antonioUnina/neutron,apporc/neutron,chitr/neutron,jumpojoy/neutron,alexandrucoman/vbox-neutron-agent,skyddv/neutron,alexandrucoman/vbox-neutron-agent,bigswitch/neutron,mmnelemane/neutron,wolverineav/neutron