Add support for specifying login name in nodeshell
Add support for specifying login name in nodeshell

xcat2/confluent,jjohnson42/confluent,xcat2/confluent,jjohnson42/confluent,jjohnson42/confluent,xcat2/confluent,xcat2/confluent,xcat2/confluent,jjohnson42/confluent,jjohnson42/confluent