[arangodb] Add ArangoDB Support

Note the Guava classes in the test directory for AsyncHBase. These are there
as AsyncHBase uses Guava >= 18 while HBase and the mini cluster use Guava 12.

The binding is based on the one created by Basho Technologies (available at https://github.com/basho-labs/YCSB/tree/master/riak).
[riak] Made compatible with the latest YCSB version.
[riak] Added strong consistency test support and made it default.
[riak] Added missing results return based on provided fields in scan/read functions.
[riak] Added TIME_OUT status return code for those transactions which take too long to complete.
[riak] Added flexible test parameter specification via customizable configuration file and command line options support.
[riak] Added test unit.
[riak] Removed unused Constants.java file.
[riak] Removed many unused function in the RiakUtils.java file.
[riak] Choosed to use executeAsync methods to resolve a bug that didn't allow the benchmark to end whenever one or more nodes of the cluster are killed.
[riak] Fixed license issues in all files.
[riak] Done some refinements to the code.

the native Protobuf GRPC based API.

updating readme

updating package info

perfecting logic for http solr clients for all operations

renamed properties, tested cloud mode and cleaned code

removed dependency on dynamic field names, updated readme

now enforcing checkstyle

adding solr artifact

removing test cases relying on external dependencies

removed unused maven dependencies, added batch mode support, all try blocks now catch eplicit exceptions, Query/UpdateResponse status codes are handled more granularly, updated readme, added sample schema.xml file to support default field names in ycsb client, updated all license headers to 2016, using SolrClient object as primary client type regardless if Solr is running in Cloud or Stand-alone mode

cleaned code and config files, now accepting a solr base url property, simplified sample schema.xml file, renamed class to SolrClient, now updating documents atomically, added batch support to delete method

updated new line spacing of pom file comments

removed sample schema file, updated readme with more indepth explanation on running/setting up the solr-binding

removed some code lines no longer in use

renamed zookeeper param name, now throwing caught exceptions where appropriate, debug messages are now being logged on stderr

now returning an appropriate error if we receive an unexpected response from solr server, repeated calls to getResults is no longer

now using singletonMap to store update params in, fixed typo and missing id field in sample config in README

The memcached support was extracted from PR #98 by @jbellis, with cleanups to
bring it in line with current APIs and style guide.

This PR also addresses issue #326.

This reverts commit 0e5866eb.

Restores #372

Add a DB client for Google Cloud Datastore. This initial commit includes implementation of all CRUD operations (modulo scan), and integration into the rest of YCSB (pom.xml changes, etc)

Next few commits will include Scan/query support, single entity group support, and better documentation.

re-enable in the build.

Updated the binding to use the new Status class.

Currently doesn't include unit tests since we don't have mock objects for that.

HBase 0.94 requires an additional dependency on hadoop-core, but has no
source-level changes to the client.

hbase/ now contains the HBase v0.9 binding code.
hbase1/ now contains the HBase 1.0 binding code.

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

closes #297

* 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

* 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.