undoguididx: blackbox test

undoguididx: blackbox test

This test confirms that running undoguididx causes all GUID keys to be
replaced with DN keys at the KV level

BUG: https://bugzilla.samba.org/show_bug.cgi?id=13978

Signed-off-by: Aaron Haslett <aaronhaslett@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
(backported from commits 74d15c9bf76f0a2fb5fa7b7b1d80971d10c4fe45,
ab376a97c972d2d5ebfb912ed90664c787860dc8 and 56400153c8c7052fe319f273c30c6d59556102dc
to avoid changes to TestCaseInTempDir).

ab376a97c972d2d5ebfb912ed90664c787860dc8 was:

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
56400153c8c7052fe319f273c30c6d59556102dc was:

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>