Network admin-only tab, fix exception when saving sliver in SliverAdmin
Network admin-only tab, fix exception when saving sliver in SliverAdmin

cboling/xos,cboling/xos,cboling/xos,opencord/xos,open-cloud/xos,zdw/xos,open-cloud/xos,zdw/xos,cboling/xos,opencord/xos,opencord/xos,zdw/xos,open-cloud/xos,cboling/xos,zdw/xos