Moving exit in case of error to rpc.py
By using exceptions in client.py it is easier to use it
as module in other scripts.
Change-Id: Ic9ecef481ef5b6a169e1293b3dcf859ffbbe0e89
Signed-off-by: Karol Latecki <karol.latecki@intel.com>
Reviewed-on: https://review.gerrithub.io/405739
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>