apparmor: use AppArmorSetFDLabel for both imageFD and tapFD
apparmor: use AppArmorSetFDLabel for both imageFD and tapFD

Rename AppArmorSetImageFDLabel to AppArmorSetFDLabel which could
be used as a common function for *ALL* fd relabelling in Linux.

In apparmor profile for specific vm with uuid cdbebdfa-1d6d-65c3-be0f-fd74b978a773
Path: /etc/apparmor.d/libvirt/libvirt-cdbebdfa-1d6d-65c3-be0f-fd74b978a773.files
The last line is for the tapfd relabelling.

 # DO NOT EDIT THIS FILE DIRECTLY. IT IS MANAGED BY LIBVIRT.
  "/var/log/libvirt/**/rhel6qcow2.log" w,
  "/var/lib/libvirt/**/rhel6qcow2.monitor" rw,
  "/var/run/libvirt/**/rhel6qcow2.pid" rwk,
  "/run/libvirt/**/rhel6qcow2.pid" rwk,
  "/var/run/libvirt/**/*.tunnelmigrate.dest.rhel6qcow2" rw,
  "/run/libvirt/**/*.tunnelmigrate.dest.rhel6qcow2" rw,
  "/var/lib/libvirt/images/rhel6u3qcow2.img" rw,
  "/dev/tap45" rw,

jfehlig/libvirt,zhlcindy/libvirt-1.1.4-maintain,taget/libvirt,eskultety/libvirt,rlaager/libvirt,shugaoye/libvirt,libvirt/libvirt,rlaager/libvirt,datto/libvirt,nertpinx/libvirt,VenkatDatta/libvirt,datto/libvirt,shugaoye/libvirt,jardasgit/libvirt,VenkatDatta/libvirt,crobinso/libvirt,agx/libvirt,VenkatDatta/libvirt,eskultety/libvirt,cbosdo/libvirt,shugaoye/libvirt,rlaager/libvirt,olafhering/libvirt,taget/libvirt,zippy2/libvirt,cbosdo/libvirt,fabianfreyer/libvirt,agx/libvirt,cbosdo/libvirt,eskultety/libvirt,datto/libvirt,jardasgit/libvirt,elmarco/libvirt,fabianfreyer/libvirt,nertpinx/libvirt,agx/libvirt,crobinso/libvirt,libvirt/libvirt,datto/libvirt,libvirt/libvirt,jardasgit/libvirt,VenkatDatta/libvirt,fabianfreyer/libvirt,taget/libvirt,andreabolognani/libvirt,datto/libvirt,zippy2/libvirt,jfehlig/libvirt,zhlcindy/libvirt-1.1.4-maintain,cbosdo/libvirt,jfehlig/libvirt,agx/libvirt,taget/libvirt,andreabolognani/libvirt,crobinso/libvirt,nertpinx/libvirt,crobinso/libvirt,rlaager/libvirt,fabianfreyer/libvirt,jardasgit/libvirt,elmarco/libvirt,jfehlig/libvirt,elmarco/libvirt,olafhering/libvirt,eskultety/libvirt,cbosdo/libvirt,jardasgit/libvirt,shugaoye/libvirt,olafhering/libvirt,VenkatDatta/libvirt,shugaoye/libvirt,zippy2/libvirt,zippy2/libvirt,taget/libvirt,nertpinx/libvirt,fabianfreyer/libvirt,elmarco/libvirt,andreabolognani/libvirt,agx/libvirt,nertpinx/libvirt,eskultety/libvirt,libvirt/libvirt,zhlcindy/libvirt-1.1.4-maintain,zhlcindy/libvirt-1.1.4-maintain,elmarco/libvirt,zhlcindy/libvirt-1.1.4-maintain,olafhering/libvirt,rlaager/libvirt,andreabolognani/libvirt,andreabolognani/libvirt