Fix invalid XML

* authwithgroups.xml: Ending tag should be same as opening one
* endpoints.xml: Remove duplicate tenantID="1" attribute
* admin-actions-reset-state.*: Deleted, it's not used anywhere and
  looking at the names, the file admin-actions-reset-server-state
  handles this already
* ports-get-resp.xml: Fix XML code

Change-Id: Ia6b71c736ba92e170167db6ef7bf7f0158483e6a