The python script for add_portal_group had required each portal is
an argument and portal list are made of remaining all arguments.
However this prevents adding new parameters to add_portal_group.
This patch changes portal list to be a single argument for python,
and each portal is separated by a whitespace in the argument.
Currently there will be very rare that a portal group has multiple
portals. Hence this change will not break any compatibility.
Updating CHANGELOG will be done together with other updates later.
Change-Id: I8c597a1194fff338afb371e6d24f9273122b753c
Signed-off-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/446379
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>