lio-py: Fix up lio_target_list_endpoints for v4.x statistics groups
lio-py: Fix up lio_target_list_endpoints for v4.x statistics groups

Reported-by: bmr.uk <e1e4a3233b1137700dd1a879cdd806647de35c68@redhat.com>
Reported-by: padan <f2bfbdef9731d7d8e8e81f89db2c039c1ee6e726@gmail.com>
Signed-off-by: Nicholas A. Bellinger <978acd1567d5598152161fdf8bf3ca568f950c9b@linux-iscsi.org>

Datera/lio-utils,Datera/lio-utils,Datera/lio-utils,Datera/lio-utils