Add missing release notes

Add release notes for the user-visible features added since the
2.0.0 release

Change-Id: I753a894f1a3f6eef3eef50661ee66c729a2567f4

Author: Dean Troyer

releasenotes/notes/bug-1486597-857e20262c038514.yaml

@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    Add ``project unset`` command for Identity v2
+    [Bug `1486597 <https://bugs.launchpad.net/bugs/1486597>`_]

releasenotes/notes/bug-1516661-757ef629f899cca3.yaml

@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    Add ``image set --activate|--deactivate`` options (Image v2 only)
+    [Bug `1516661 <https://bugs.launchpad.net/bugs/1516661>`_]

releasenotes/notes/bug-1517134-9efecb257910989c.yaml

@@ -0,0 +1,6 @@
+---
+features:
+  - |
+    Add ``--project-domain`` option to ``image create`` and ``image set`` commands
+    (Image v2 only)
+    [Bug `1517134 <https://bugs.launchpad.net/bugs/1517134>`_]

releasenotes/notes/bug-1519503-978a68a54819dbbc.yaml

@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    Add ``router`` commands ``create``, ``delete``, ``list``, ``set``, ``show``
+    [Bug `1519503 <https://bugs.launchpad.net/bugs/1519503>`_]

releasenotes/notes/bug-1519512-d20f44aca1f9e9b9.yaml

@@ -0,0 +1,6 @@
+---
+fixes:
+  - |
+    Make ``security group rule list`` group argument optional to list all
+    security groups
+    [Bug `1519512 <https://bugs.launchpad.net/bugs/1519512>`_]

releasenotes/notes/bug-1521492-89b972c6362940a5.yaml

@@ -0,0 +1,5 @@
+---
+fixes:
+  - |
+    Change ``server list --flavor`` to now accept flavor ID or name
+    [Bug `1521492 <https://bugs.launchpad.net/bugs/1521492>`_]

releasenotes/notes/bug-1521492-8cde2601591a8c78.yaml

@@ -0,0 +1,5 @@
+---
+fixes:
+  - |
+    Change ``server list --image`` to now accept image ID or name
+    [Bug `1521492 <https://bugs.launchpad.net/bugs/1521492>`_]

releasenotes/notes/bug-1522969-63abf273c6e71a07.yaml

@@ -0,0 +1,6 @@
+---
+features:
+  - |
+    Add ``--src-group`` option to ``security group rule create`` to include a
+    'remote' security group rule.
+    [Bug `1522969 <https://bugs.launchpad.net/bugs/1522969>`_]

releasenotes/notes/bug-1524456-9967fac653c91cb2.yaml

@@ -0,0 +1,6 @@
+---
+fixes:
+  - |
+    Change the ``project set --domain`` option to use the argument as a lookup
+    for locating projects in non-default domains.
+    [Bug `1524456 <https://bugs.launchpad.net/bugs/1524456>`_]