dsdb.tests.sites: merge interdependent tests
The delete test deleted the site made by the create test, which worked
because "delete" sorts after "create" alphabetically. By themselves,
"delete" would fail and "create" would neglect its duty to clean up.
This would be an issue if the order of tests changes, if one of the
tests is not run, or if another test appears in between. Everything is
fine if they give up the pretense of independence.
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>