tests: Integrate startup checks to qemuxml2argvtest
tests: Integrate startup checks to qemuxml2argvtest

Some of the tests that are not a part of qemuBuildCommandLine were not
executed in the test suite. We can now reuse qemuProcessStartValidate to
integrate these tests.

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