[dv/common] update naming from sanity to smoke

Signed-off-by: Cindy Chen <chencindy@google.com>
diff --git a/util/dvsim/dvsim.py b/util/dvsim/dvsim.py
index 465bcae..53ccc62 100755
--- a/util/dvsim/dvsim.py
+++ b/util/dvsim/dvsim.py
@@ -235,9 +235,9 @@
     whatg.add_argument("-i",
                        "--items",
                        nargs="*",
-                       default=["sanity"],
+                       default=["smoke"],
                        help=('Specify the regressions or tests to run. '
-                             'Defaults to "sanity", but can be a '
+                             'Defaults to "smoke", but can be a '
                              'space separated list of test or regression '
                              'names.'))