repo: update to 2.30 launcher

Change-Id: I66a830a22488a9b8b7d8cc00857efa144e153648
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/4054940
Reviewed-by: Josip Sokcevic <sokcevic@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>

repo_launcher

@@ -149,7 +149,7 @@ if not REPO_REV:
 BUG_URL = 'https://bugs.chromium.org/p/gerrit/issues/entry?template=Repo+tool+issue'
 
 # increment this whenever we make important changes to this script
-VERSION = (2, 29)
+VERSION = (2, 30)
 
 # increment this if the MAINTAINER_KEYS block is modified
 KEYRING_VERSION = (2, 3)
@@ -316,9 +316,10 @@ def InitParser(parser, gitc_init=False):
                    help='download the manifest as a static file '
                         'rather then create a git checkout of '
                         'the manifest repo')
-  group.add_option('--manifest-depth', type='int', default=1, metavar='DEPTH',
+  group.add_option('--manifest-depth', type='int', default=0, metavar='DEPTH',
                    help='create a shallow clone of the manifest repo with '
-                        'given depth; see git clone (default: %default)')
+                        'given depth (0 for full clone); see git clone '
+                        '(default: %default)')
 
   # Options that only affect manifest project, and not any of the projects
   # specified in the manifest itself.