[maven-release-plugin] prepare release clouddocs-maven-plugin-1.15.0
[maven-release-plugin] prepare release clouddocs-maven-plugin-1.15.0

Change-Id: I3ce2bae8c9bfab719948cf1771a59d1edbca7edb

stackforge/clouddocs-maven-plugin,rackerlabs/rackspace-docs-maven-plugin,OCselected/clouddocs-maven-plugin,OCselected/clouddocs-maven-plugin,rackerlabs/rackspace-docs-maven-plugin,rackerlabs/rackspace-docs-maven-plugin,stackforge/clouddocs-maven-plugin,stackforge/clouddocs-maven-plugin,rackerlabs/clouddocs-maven-plugin,rackerlabs/clouddocs-maven-plugin,rackerlabs/rackspace-docs-maven-plugin,stackforge/clouddocs-maven-plugin,OCselected/clouddocs-maven-plugin,rackerlabs/clouddocs-maven-plugin,OCselected/clouddocs-maven-plugin