This patch adds periodic timer to conductor service.
Any new periodic tasks need to be added to magnum/service/periodic.py
We add 2 default configure options to support periodic task:
'periodic_enable', default=True
'periodic_interval_max', default=60
These 2 options are for rpc_service.
PS:
We don't need to supervisor timers because timer itself won't have any
exception, and it is not a thread, which means can not be killed.
Partial-Implements: blueprint add-periodic-task
Co-Authored-By: ShaoHe Feng <shaohe.feng@intel.com>
Change-Id: I132d9cc89b26baf249b62b713ccd3776f0078d7d
fbe5b8065f