Update pom and source to use 1.7.2 of clouddocs plugin.

Change-Id: I34c0dabbbe145cca144d26aa43a69b254960eca3
Updating api spec site w/ block storage v2 doc link

This was using the api reference site since the v1 docs weren't being
built. Now we're on v2 and it's built!

Change-Id: I71fca734c3e3f6ea5f29d51bb2e3dc18400b87f4
Clarifying installation for messing server install for Red Hat based systems

Update to basic-install pom.xml just for local building.

Change-Id: I62dbf0051d22adc5ec502857ef977790f99b362b
Merge "Clarifying installation for messing server install for Red Hat based systems"
Merge "Update pom and source to use 1.7.2 of clouddocs plugin."