Monitoring IPMItool Bug fix

- The username and password for ipmitool command needs to be taken from configuration in server JSON
- If not configured, default credentials used will be admin/admin

Change-Id: I99c7d91dde512b1b54f24605a7a584e396690021
[Server Manager: defaults ]
Partial-Bug: #1393507
Removed the sm-defaults.ini as defaults is moved to sm-config

Tetsting:
1)Made sure we are abel to add server with minimla data.
2)Re-image them
3)Add cluster with minimal data.
4)Provision the server with newly created cluster.

Change-Id: Ia4df2b0a10eb1a8a33ea8c0c7e7a55942a7261ac
Merge remote-tracking branch 'upstream/master' into monitoring_2.0