Merge pull request #43 from jtaleric/master

Cassandra fixes...
Two-line change to fix Cinder volume creation/deletion bugs in OpenStack Clouds.
During attachment, CB now waits until the VM is in the "running/active" state
before attaching a volume. During detachment, CB waits until the instance is
fully terminated before removing the volumes (it is supposed to wait for it
already, it wasn't just because of CB bug).
Merge pull request #44 from jtaleric/master

Update cassandra-init.cassandra
Merge pull request #45 from jtaleric/master

Update cb_ycsb.sh
Merge pull request #47 from jtaleric/master

Update PUBLIC_application_instances.txt