Change commit message and add TODO.

BUG=chromium:846915
TEST=None

Change-Id: I0f6c943a0bc087a7a6daaeb1a55bbb27b787f1fa
Reviewed-on: https://chromium-review.googlesource.com/1091916
Commit-Ready: Ningning Xia <nxia@chromium.org>
Tested-by: Ningning Xia <nxia@chromium.org>
Reviewed-by: Xixuan Wu <xixuan@chromium.org>
diff --git a/cli/host.py b/cli/host.py
index cef62fd..16a1bb3 100644
--- a/cli/host.py
+++ b/cli/host.py
@@ -1069,6 +1069,7 @@
                             host, MIGRATED_HOST_SUFFIX)
 
                 if not self.dryrun:
+                    # TODO(crbug.com/850737): delete and abort HQE.
                     data = {'hostname': new_hostname}
                     self.execute_rpc('modify_host', item=host, id=host, **data)
                 successes.append((host, new_hostname))
@@ -1258,7 +1259,7 @@
             device_hostnames = [str(d.common.hostname) for d in all_devices]
             message = (
                 'Migration: move %s hosts into skylab_inventory.\n\n'
-                'Please run command:\n'
+                'Please run this command after the CL is submitted:\n'
                 'atest host rename --for-migration %s' %
                 (len(all_devices), ' '.join(device_hostnames)))
         else:
@@ -1277,7 +1278,7 @@
                                 for d in all_devices]
             message = (
                 'Rollback: remove %s hosts from skylab_inventory.\n\n'
-                'Please run command:\n'
+                'Please run this command after the CL is submitted:\n'
                 'atest host rename --for-rollback %s' %
                 (len(all_devices), ' '.join(device_hostnames)))