syms: add forgotten virAdmConnectClass symbol
syms: add forgotten virAdmConnectClass symbol

Although it currently doesn't cause any linking issues, the symbol should be
exported correctly according to our conventions.

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