Update connect_libvirt.rb

Added an escape character to the connect string - since it was not escaped the connection URI was cut off after "?noverify=1"
Merge pull request #161 from maishsk/patch-1

Update connect_libvirt.rb
Only rsync if the type is set to rsync

Since the default of vagrant-libvirt is now NFS even in case the type is
empty, rsync should only be called if the type is explicitly set to
rsync.
Merge pull request #165 from ekohl/assume-nfs-default

Only rsync if the type is set to rsync