Add Savanna-related configs for testing

Currently we're only need to expose catalog_type config.

Change-Id: I29bc1d91adc7098cdc162146ccabe6197162faf0
Add Savanna client for node group templates

It adds data_processing service with simple Savanna client that currently
supports only CRUD operations with node group templates.

Change-Id: Ic96ae88fcfe164f4953013a2d4433bc9c9bf6c6d
Fix the help message for run_ssh

Change-Id: I3101f68386420479172d51bca5ee658099f9a323
scenario/network_basic_ops: reassociate floating-ip

check that a detached FIP can be associated with a new VM and make sure
it is not associated with the old VM by assigning a different keypair to each
new VM so that ssh connection cannot be made without the right keypair

Change-Id: Ib535aa66638a3e7f2f1549b6e7a21a160377df6a
Merge "Fix the help message for run_ssh"
Merge "Add Savanna-related configs for testing"
Merge "Add Savanna client for node group templates"
Merge "scenario/network_basic_ops: reassociate floating-ip"