[automerger skipped] Make the USAP Pool refill delay configurable. am: eabbf8720c am: d5c2d5d792 am: 20b1fc4dcb -s ours
am skip reason: Change-Id Idfeb30fa62fa296492da211b2b44902ff4f99b18 with SHA-1 3deb2b5b7a is in history

Change-Id: I9d43e6bade7270e03ff02cf00aae99b2e54ad6e7