Add rootdev to flaky_repos

BUG=b/178720715
TEST=repo init and repo sync
RELEASE_NOTE=None

Change-Id: I4a2b1d20f9f820e45c762cf7d6985f6f276118eb
Reviewed-on: https://cos-review.googlesource.com/c/cos/manifest/+/11490
Reviewed-by: Vaibhav Rustagi <vaibhavrustagi@google.com>
Tested-by: Robert Kolchmeyer <rkolchmeyer@google.com>
diff --git a/flaky_repos.xml b/flaky_repos.xml
index 05814c2..bb5cef6 100644
--- a/flaky_repos.xml
+++ b/flaky_repos.xml
@@ -50,6 +50,10 @@
            name="chromiumos/third_party/hdctools"
            revision="refs/heads/main"
            remote="chromium" />
+  <project path="src/third_party/rootdev"
+           name="chromiumos/third_party/rootdev"
+           revision="refs/heads/main"
+           remote="chromium" />
 
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