Merge pull request #145 from Randgalt/master

update versions
[Gradle Release Plugin] - pre tag commit:  '1.5.0'.
[Gradle Release Plugin] - new version commit:  '1.5.1-SNAPSHOT'.
1) Default properties were not getting set correctly causing a brand new install of Exhibitor
to have no defaults set. This could be the cause of Issue 148.

2) ZookeeperConfigProvider wasn't creating parent paths.