Revert "Reroute rules_python repo to actual bazelbuild repo" Revert submission 2678115-reroute-rules_python Reason for revert: manifest for path external/bazelbuild-rules_python doesn't exist in some branches causing CI breakage. Reverted changes: /q/submissionid:2678115-reroute-rules_python Change-Id: I6e4fc7cd667dbc3dd1dd879448aafc8469622f2f