Correct "Clean up policy matrix for Xena release"

The volume_extension:hosts policy, being admin-only, was not touched
in Xena.  Hence, it wasn't deprecated and the new policies were not
introduced.  Correct the matrix to reflect this.

Change-Id: I1c68fc603f1d2fdc7a9c04b5c42e8e6e89c69fc6

doc/source/configuration/block-storage/policy-personas.rst

@@ -1438,10 +1438,10 @@ matrix is validated by human beings.
      - yes
      - no
      - yes
-   * - | **DEPRECATED**
+   * - | List, update or show hosts for a project
-       | List, update or show hosts for a project
+       | (NOTE: will be deprecated in Yoga and new policies introduced
-     - | (NOTE: new policies split GETs and PUT)
+       | for GETs and PUT)
-       | ``GET  /os-hosts``
+     - | ``GET  /os-hosts``
        | ``PUT  /os-hosts/{host_name}``
        | ``GET  /os-hosts/{host_id}``
      - volume_extension:hosts
@@ -1453,42 +1453,6 @@ matrix is validated by human beings.
      - yes
      - no
      - yes
-   * - | **NEW**
-       | List hosts
-     - ``GET  /os-hosts``
-     - volume_extension:hosts:get_all
-     - (new policy)
-     - no
-     - no
-     - no
-     - no
-     - yes
-     - n/a
-     - n/a
-   * - | **NEW**
-       | Show detail about a host
-     - ``GET  /os-hosts/{host_id}``
-     - volume_extension:hosts:get
-     - (new policy)
-     - no
-     - no
-     - no
-     - no
-     - yes
-     - n/a
-     - n/a
-   * - | **NEW**
-       | Update a host
-     - ``PUT  /os-hosts/{host_name}``
-     - volume_extension:hosts:update
-     - (new policy)
-     - no
-     - no
-     - no
-     - no
-     - yes
-     - n/a
-     - n/a
    * - Show limits with used limit attributes
      - ``GET  /limits``
      - limits_extension:used_limits