Merge pull request #156 from sagarl/1.1

Updating restore directories as per the 1.1 directory structure under Incremental Restore
Merge pull request #157 from sagarl/1.1

Incrementing version number
Gradle Release Plugin - new version commit:  'priam-root-1.1.19'.
Fixing false assumption in TuneCassandra. Previously, there was logic to guard
against yaml config settings that had been added or removed from different versions. This was tested
by adding a null check to see if the setting existed in the yaml that was read in. Unfortunately,
if a property was commented out in the yaml (yet still compltetly valid as a setting) the entry would
not be present in the map that snakeyaml produced, and hence you could never write out that setting.
Basically this was a poor man's way to avoid branching. Now that we branch in priam, that is no longer necessary.
Merge pull request #160 from jasobrown/1.1

Fixing false assumption in TuneCassandra regarding setting compatibility. Reviewed by sloke
updating target cassandra version
Merge pull request #162 from jasobrown/1.1

updating target cassandra version
Filtering/ignoring Dummy nodes as seeds