RDS: restore the exponential back-off scheme

RDS: restore the exponential back-off scheme

Lower IP and exponential back-off scheme was added to save the
SM queries because of races but it doesn't do what its intended.
The exponential back-off scheme does a good job of backing off
for races. The code just falls back to the original scheme.

Orabug: 22347191

Tested-by: Michael Nowak <michael.nowak@oracle.com>
Tested-by: Rafael Alejandro Peralez <rafael.peralez@oracle.com>
Tested-by: Liwen Huang <liwen.huang@oracle.com>
Tested-by: Hong Liu <hong.x.liu@oracle.com>
Reviewed-by: Mukesh Kacker <mukesh.kacker@oracle.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>