Configuration Reference additions.

Moves some items to ops guide, one item to install, updates the
pom.xml, ensures validation, removes whitespace.

Moves all configuration info in Block Storage Admin Guide to Config Ref.

Removes duplicated content from Compute Admin Guide to Config Ref.

Change-Id: I0a7fb144241be7acf7c9063e5290220b5d7b7192
Merge "Configuration Reference additions."