Edits on section_vmware.xml

Cleanup of markup and language

Change-Id: Ied76ffe7a62e9882668eb900a3ed9ee0bf5c765d
Included content for ceilometer CLI section in user guide

Included section 'Metering' in the CLI chapter with some basic
commands for listing alarms, meters, statistics etc. Also included
the list of commands, optional arguments in the Appendix-Command
Reference. Made minor updates according to review comments.
Partial-Bug: #1201459

Change-Id: I42b18fea1f8eec2df8d78cb1dd55f4cb03766feb
Merge "Edits on section_vmware.xml"
Merge "Included content for ceilometer CLI section in user guide"