Revert "refactor mount.lustre to use flag starting_client"

This reverts commit 168be656e3903a0272c4f46f0241517060be34d6.

Committed to incorrect branch.
Revert "parse_opts determines whether starting service"

This reverts commit 01de6549d9184b41a3edb5893dae22698c794f69.

Committed to the wrong branch.