[VirtualBox/el7] (7 commits) ...Update VirtualBox to 6.1.34

Summary of changes: 505ebe8... Add BR pulseaudio-libs-devel which add pulse audio support (*) 84bf3bb... Rebuild for libvpx (*) 7381756... Re-enable python on Fedora > 34 (*) eeba981... add upstream patch not yet in released versions (*) e67a1ae... Re-enable python on Fedora > 34 (*) 9e498cf... Re-enable webservice (*) aa4868f... Update VirtualBox to 6.1.34 (*) (*) This commit already existed in another branch; no separate mail sent