[LSC] Add LOCAL_LICENSE_KINDS to external/shflags am: 1eca1ae9a0 am: 92fe1c1b82 am: 789cff296e

Original change: https://android-review.googlesource.com/c/platform/external/shflags/+/1588909

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I9b0c2487878bfd57759e759ed4b079386c389e0d