Minor edits to LDAP backend and production status commands

Summary:

• Add line numbers to exceptions where they are relevant for all stack traces go through the throwException() function, but sometimes the messages are the same between various instances
• Some verbosity to user:status and domain:status commands

Test Plan: None

Reviewers: #hkccp_developers

Subscribers: #hkccp_developers

Differential Revision: https://git.kolab.org/D1552