As a part of branching to stage 0.2.0 release in #266, set version
for continued development on master branch.

* remove unused declared deps in a few places
* lex sort modules in top level pom
* update maven plugin versions.
* no more jar-with-dependencies
* set ycsb-core to provided in bindings
* introduce a bindings-parent pom that sets
** stage dependency copy on building binding
** iff binding has a README.md, build a binding-specific dist artifact
* update distribution assembly to
** properly build after modules
** use per-binding sets of dependencies

closes #250

closes #94

* enabling gemfire module and updating to release 7.0.2
* verified that there are no failures while trying to resolve gemfire repo.
* fixed an NPE.

Amending-Author: Sean Busbey <sean.busbey@gmail.com>
Signed-off-by: Sean Busbey <sean.busbey@gmail.com>

* Need a SNAPSHOT version because non-SNAPSHOT is reserved for actual releases.
* Increment minor version per pre-1.0 guidelines from the Version Numbers guide

Fixes #236.

- re-enabled gemfire
- bumped up gemfire version to 7.0.2

enabling gemfire plugin and updating to release 6.6.3. verified that there are no failures while trying to resolve gemfire repo.