Update completed specs after Mitaka release

This update adds 5.0/ and 5.1/ directories, moves the symlinks for
completed specs into them, and updates the index.html page to reflect
the completion of the Mitaka cycle.

It also moves te partition-image-support-for-agent-driver from the
backlog to the approved directory, since the work was actually
completed, and updates the spec to include two missing (and unaffected)
sections.

Change-Id: Ice187410798a4d93044095dd476792d919222701

doc/source/index.rst

@@ -61,6 +61,24 @@ development cycles in which they were completed.
 Mitaka
 ------
 
+5.1
+~~~
+
+.. toctree::
+   :glob:
+   :maxdepth: 1
+
+   specs/5.1/*
+
+5.0
+~~~
+
+.. toctree::
+   :glob:
+   :maxdepth: 1
+
+   specs/5.0/*
+
 4.3
 ~~~
 

specs/5.1/partition-image-support-for-agent-driver.rst

@@ -0,0 +1 @@
+../approved/partition-image-support-for-agent-driver.rst

specs/approved/partition-image-support-for-agent-driver.rst

@@ -56,11 +56,21 @@ Data model impact
 
 None.
 
+State Machine Impact
+--------------------
+
+None.
+
 REST API impact
 ---------------
 
 None.
 
+Client (CLI) impact
+-------------------
+
+None.
+
 RPC API impact
 --------------