if rabbitmq is too much pressure or blockage.scheduler
will not received service capabilities, but once the
message queue(rabbitmq) returns to normal, scheduler
will received many service capabilities, these service
capabilities are acquired by manila share at different
times, so the timestamp of service capabilities shoud
added at share manage layer(before rpc), but not
scheduler layer(after rpc), once scheduler get an newer
service capabilities, there is no need to update an
earlier service capabilities.
Closes-Bug: #1908963
Change-Id: I6ce99ed4451c5d02cb4446861fa59e55a94951a5
70bb650e7f