security_stack: remove extra Security from function names
security_stack: remove extra Security from function names

Many of the functions follow the pattern:
virSecurity.*Security.*Label

Remove the second 'Security' from the names, it should be
obvious that the virSecurity* functions deal with security
labels even without it.

datto/libvirt,VenkatDatta/libvirt,datto/libvirt,nertpinx/libvirt,jfehlig/libvirt,nertpinx/libvirt,datto/libvirt,taget/libvirt,rlaager/libvirt,olafhering/libvirt,rlaager/libvirt,olafhering/libvirt,jfehlig/libvirt,fabianfreyer/libvirt,jardasgit/libvirt,taget/libvirt,rlaager/libvirt,andreabolognani/libvirt,crobinso/libvirt,andreabolognani/libvirt,eskultety/libvirt,nertpinx/libvirt,andreabolognani/libvirt,nertpinx/libvirt,zippy2/libvirt,jardasgit/libvirt,fabianfreyer/libvirt,VenkatDatta/libvirt,crobinso/libvirt,jardasgit/libvirt,fabianfreyer/libvirt,olafhering/libvirt,jardasgit/libvirt,jfehlig/libvirt,rlaager/libvirt,taget/libvirt,rlaager/libvirt,crobinso/libvirt,libvirt/libvirt,zippy2/libvirt,taget/libvirt,eskultety/libvirt,libvirt/libvirt,VenkatDatta/libvirt,zippy2/libvirt,VenkatDatta/libvirt,fabianfreyer/libvirt,andreabolognani/libvirt,datto/libvirt,libvirt/libvirt,nertpinx/libvirt,eskultety/libvirt,andreabolognani/libvirt,olafhering/libvirt,jfehlig/libvirt,eskultety/libvirt,zippy2/libvirt,crobinso/libvirt,eskultety/libvirt,taget/libvirt,libvirt/libvirt,datto/libvirt,VenkatDatta/libvirt,jardasgit/libvirt,fabianfreyer/libvirt