Revert "Fix label name generated by workskace-status.sh"

This change broke 'bazel build :all'

This reverts commit 1c7533b4a514a39afc05b72edf6faf4cd71cca0a.

Change-Id: Ib24b9adfad320937b0ec788ab0f46f423ea6873c
diff --git a/tools/workspace-status.sh b/tools/workspace-status.sh
index 83f9cdc..35966f1 100755
--- a/tools/workspace-status.sh
+++ b/tools/workspace-status.sh
@@ -14,4 +14,4 @@
   cd $1; git describe --always --match "v[0-9].*" --dirty
 }
 
-echo STABLE_BUILD_OWNERS_LABEL $(rev .)
+echo STABLE_BUILD_OWNERS-AUTOASSIGN_LABEL $(rev .)