testcase: also check non executable lib for missing rpaths
Our condition was only checking executables, which missed some non executable libraries. Following up on nexedi/slapos.core!172 (comment 96033) /reviewed-on nexedi/slapos.core!180
Our condition was only checking executables, which missed some non executable libraries. Following up on nexedi/slapos.core!172 (comment 96033) /reviewed-on nexedi/slapos.core!180