With this change, init for sysman Standby API would not be done during zeInit.
Rather init and thereby Standby API handle creation would be done only
when user explicitly requests to enumerate handles
using zesDeviceEnumStandbyDomains.
Related-To: LOCI-3127
Signed-off-by: Kulkarni, Ashwin Kumar <ashwin.kumar.kulkarni@intel.com>