net: Make 'net gpo linkadd -h' more descriptive
I was trying to use 'linkadd' command but everytime I was getting 'link add failed: Invalid DN syntax'
Now it's not clear Which DN? OU DN or GPO DN. I looked into the code and found syntax of GPO DN should be: '!strnequal(gpo_dn, "LDAP://CN={", strlen("LDAP://CN={"))'
and linkadd started working.
This change make description of linkadd command more descriptive stating an example which will help user to use correct syntax for applying the gpo to container.
Signed-off-by: Amit Kumar amitkuma@redhat.com