Allow users to specify a custom tryjob name via --remote-description

BUG=None
TEST=cbuildbot --remote-description 'monkeys' --remote <args>

Change-Id: If4b6ec65a7cf66b3f35033024b5ecfa5c7114f68
Reviewed-on: https://gerrit.chromium.org/gerrit/27825
Tested-by: Brian Harring <ferringb@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Commit-Ready: Brian Harring <ferringb@chromium.org>
diff --git a/scripts/cbuildbot.py b/scripts/cbuildbot.py
index e106298..f1487cc 100644
--- a/scripts/cbuildbot.py
+++ b/scripts/cbuildbot.py
@@ -794,6 +794,10 @@
                            help='Name of profile to sub-specify board variant.')
   parser.add_option('--remote', default=False, action='store_true',
                     help=('Specifies that this tryjob should be run remotely.'))
+  parser.add_option('--remote-description', default=None,
+                    help=('Attach an optional description to a --remote run '
+                          'to make it easier to identify the results when it '
+                          'finishes.'))
 
   #
   # Advanced options