Check admin context in bm_interface_get_all()
Check admin context in bm_interface_get_all()

This patch puts missing @require_admin_context before
the function.

blueprint general-bare-metal-provisioning-framework

Change-Id: I07d78f75b7f98a225398ca67b3bda251bc6c0440

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