Update release notes

Change-Id: I409379f72c8bb42b73e0f3aef8226904975d06ff

releasenotes/notes/add-secondary-sorting-by-name-for-root-disks-4de2c0358b9a1e2c.yaml

@@ -2,7 +2,7 @@
 features:
   - |
     Adds secondary sorting by device name when guessing the root disk. This
-    makes the selection process more predicatble and increases the chances
+    makes the selection process more predictable and increases the chances
     that systems which try only one device for booting will actually
     successfully boot after deployment. As the primary sorting is still done
     by size, the root device hints still take priority, and the current

releasenotes/notes/build-tinyipa-with-python3-d4a64aa18f970968.yaml

@@ -1,4 +1,4 @@
 ---
 other:
   - Updates the tinyipa build scripts to support building and running Ironic
-    Python Agent with python3.6.
+    Python Agent with Python 3.

releasenotes/notes/enhance-checksum-2256ffdcce13836e.yaml

@@ -1,7 +1,7 @@
 ---
 features:
   - |
-    Adds enhanced checksum support to IPA, when ``os_hash_algo`` and
-    ``os_hash_value`` are passed in via ``image_info``, it will be used
-    for image checksum calculation and verification. The md5 checksum
-    is supported if these information are absent.
+    Adds enhanced checksum support to IPA. When ``os_hash_algo`` and
+    ``os_hash_value`` are passed in via ``image_info`` (from the node's
+    ``instance_info``), they will be used for image checksum calculation and
+    verification. The md5 checksum is used if this information is absent.

releasenotes/notes/erase_metadata_from_partitions-4f1902533d530b8f.yaml

@@ -1,8 +1,8 @@
 ---
 features:
   - |
-    Erase metadata on disk partitions to prevent the Linux kernel from
-    automatically recreating storage entities (eg LVM, RAID) described by the
+    Erases metadata on disk partitions to prevent the Linux kernel from
+    automatically recreating storage entities (e.g. LVM, RAID) described by the
     metadata. The Hardware Manager API was correspondingly modified to
     optionally include partitions when listing block devices. See `story
     2003673 <https://storyboard.openstack.org/#!/story/2003673>`_ for details.

releasenotes/notes/parallel-erase-disk-devices-09ea33d5443aead0.yaml

@@ -1,11 +1,10 @@
 ---
 features:
   - |
-    Support parallel disk device erasure. This is controlled by the
-    ``driver_internal_info['agent_enable_parallel_erasure']`` passed
-    by ironic.
+    Supports parallel disk device erasure. This is controlled by ironic's
+    ``[deploy]disk_erasure_concurrency`` configuration option.
 other:
   - |
-    The ``HardwareManager.erase_block_device`` interface could be called
-    concurrently to support the feature of parallel disk device erasure,
-    it should be implemented in a thread-safe way.
+    The ``HardwareManager.erase_block_device`` method is now called
+    concurrently when parallel disk device erasure is used. It must be
+    implemented in a thread-safe way.

releasenotes/notes/tinyipa-python3-default-b8434793e17465db.yaml

@@ -1,9 +1,7 @@
 ---
 prelude: >
-    Tinyipa is the base image for testing Ironic Python Agent.
-    In the effort of moving toward a full Python 3 friendly environment,
-    with this patch we start building the tinyipa image with Python 3 by
-    default.
+    Starting with this release, the Ironic Python Agent images used in the CI
+    (tinyipa) run with Python 3 by default.
 other:
   - Change the Python default version used to build and run the Ironic
     Python Agent in the Tiny Core based image to 3.6.