lxc: use job functions in lxcDomainLxcOpenNamespace & lxcDomainSendProcessSignal
lxc: use job functions in lxcDomainLxcOpenNamespace & lxcDomainSendProcessSignal

Use the recently added job functions in lxcDomainLxcOpenNamespace,
lxcDomainSendProcessSignal.

Signed-off-by: Katerina Koukiou <2601125deb717345fbc1a69eaf8ffe9a28fa5fe9@gmail.com>

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