Clean up release notes since 2.2.0 release

* Remove release notes for changes to commands that have not been released yet
* Combine notes for common command sets (ie, new port commands)
* Rename notes with bugs to the bug-NNNNN-XXXXXXX form

Change-Id: I6216aad443056ada2fe28ba533bf20a09f118e4d

Author: Dean Troyer

releasenotes/notes/add-disable-reason-6e0f28459a09a60d.yaml

@@ -1,4 +1,4 @@
 ---
 features:
   - |
-    Add support for the ``--disable-reason`` of ``service set`` command
+    Add ``--disable-reason`` option to the ``service set`` command

releasenotes/notes/add-external-options-7a66219d263bb1e5.yaml

@@ -1,5 +1,5 @@
 ---
 features:
   - |
-    Add support for the ``port set`` command.
+    Add support for the ``port create``, ``port list`` and ``port set`` commands.
     [Bug `1519909 <https://bugs.launchpad.net/python-openstackclient/+bug/1519909>`_]

releasenotes/notes/add-name-to-port-set-eefa081225bf8b49.yaml

@@ -1,4 +1,4 @@
 ---
 features:
   - |
-    Add support for the ``server restore`` command.
+    Add ``server restore`` command

…d-port-set-command-2b4fe38ec71ad48f.yaml …/add-port-commands-a3580662721a6312.yamlreleasenotes/notes/add-port-set-command-2b4fe38ec71ad48f.yaml renamed to releasenotes/notes/add-port-commands-a3580662721a6312.yaml releasenotes/notes/add-port-set-command-2b4fe38ec71ad48f.yaml renamed to releasenotes/notes/add-port-commands-a3580662721a6312.yaml

@@ -1,6 +1,7 @@
 ---
 features:
-  - The ``security group create`` command now uses Network v2 when
+  - The ``security group create``, ``security group set`` and
+    ``security group show`` commands now uses Network v2 when
     enabled which results in a more detailed output for network
     security group rules.
     [Bug `1519511 <https://bugs.launchpad.net/bugs/1519511>`_]