Revert "[maven-release-plugin] prepare for next development iteration"

This reverts commit 0e7c251381e70a02a7ef0bf7c1735fb2cd88bd83.
Revert "[maven-release-plugin] prepare release jclouds-labs-openstack-1.6.2-incubating-rc0"

This reverts commit 1caa805a794044e6be68c76424f5a50108fb9599.
[maven-release-plugin] prepare release jclouds-labs-openstack-1.6.2-incubating-rc1