A second round of Ruby linting

So I gave in and made the changes…

I also replaced the backticks in line 32 with a system call as I am
getting some weirdness with them as of a Ruby update this morning.
Might be unrelated though.

Please also test the Fusion changes from this and my previous pull
request as I don’t have it on hand to test with.
Misaligned multi-line string
Merge branch 'master' of https://github.com/matthewrees/ceph-ansible
Vagrant monitor_interface variable fix

When provisioning using Vagrant, a hostvars lookup for a variable name
will fail. It will now simply use the variable name directly.

Tested working using a clean “vagrant up”.
Revert "Vagrant monitor_interface variable fix"

This reverts commit 1947d3090883b81e89d0ac37b27b1533527748a4.
Revert "Revert "Vagrant monitor_interface variable fix""

This reverts commit 1dd87cfdf7ac682647386e15e659a92f1773b177.
Revert 11bbac7..acc1eda

This rolls back to commit 11bbac79319a06e8f8f92c87f74a76d582a51253.