qemu: agent: Reuse virJSONValueObjectCreateVArgs in qemuAgentMakeCommand
qemu: agent: Reuse virJSONValueObjectCreateVArgs in qemuAgentMakeCommand

Since the code is now separated into the common helper, we can reuse it
instead of maintaining two copies.

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