Migrate to fileutils and lockutils.
Migrate to fileutils and lockutils.

Migrate nova to using openstack-common's file and lock utilities.
Resolves bug 1063230.

Change-Id: I1a4c87856bc08cd33b61d7098ed856baa4583654

emonty/ironic,JioCloud/ironic,debayanray/ironic_backup,supermari0/ironic,openstack/ironic,dims/ironic,pshchelo/ironic,pshchelo/ironic,Tehsmash/ironic,dims/ironic,naterh/ironic,faizan-barmawer/openstack_ironic,SauloAislan/ironic,faizan-barmawer/elytics,hpproliant/ironic,naototty/vagrant-lxc-ironic,openstack/ironic-lib,bacaldwell/ironic,ionutbalutoiu/ironic,froyobin/ironic,naototty/vagrant-lxc-ironic,Tan0/ironic,citrix-openstack-build/ironic-lib,citrix-openstack-build/ironic,redhat-openstack/ironic,SauloAislan/ironic,ramineni/myironic,citrix-openstack-build/ironic,rdo-management/ironic,varunarya10/ironic,bacaldwell/ironic,faizan-barmawer/ironic-lib,NaohiroTamura/ironic,openstack/ironic,rackerlabs/ironic,devananda/ironic,NaohiroTamura/ironic,ionutbalutoiu/ironic,NaohiroTamura/ironic-lib