Options for XenAPI support are supposed to have been deprecated, but
actually they were removed by the deprecation patch[1]. This change is
a partial revert of that patch[1], and ensures that these options are
loaded, so that warning messages about these deprecated options appear
in logs.
This change also removes these deprecated options from the example
rootwrap conf file.
[1] a6dbf97242
Change-Id: Id024dabf276e492268e723e526d7a787156eb9c1
459716e644