Merge "init: Add --only-if-running argument to restart command." am: 8189339de3 am: 3a9fc6ea0a am: fc8282c865 am: 604c4425eb

Original change: https://android-review.googlesource.com/c/platform/system/core/+/1910536

Change-Id: Ie7a7cf335fe14b16b7d74ebbd984a5ae6a2222fc