* Adding support for Apache Crail (crail.apache.org)

* Adding Crail benchmark source and README

* Cleaning white space

* Fixing CrailClient::read
- Thanks @pepperjo

* Moving classes to Crail specific package

* Use a Logging framework instead of System.out

* 1) Make binding respect configuration of table name
2) Add new benchmark parameter 'crail.enumeratekeys'

* Removing deprecated driver.
Tracked in issue https://github.com/brianfrankcooper/YCSB/issues/1269

* Cause rebuild

* Adding Azure Cosmos Driver.
Still some improvements to make like automatically creating the YCSB database and usertable collection. But this does bring in the all the latest SDKs / etc.

* updated ArangoDB binding (Java driver 4.4.1)
* Add deprecation warning for binding 'arangodb3'

Closes #1118
Closes #1165

Co-authored-by: Sergey Puchnin <spuchnin@gridgain.com>
Co-authored-by: Taras Ledkov <tledkov@gridgain.com>
Co-authored-by: Oleg Ostanin <oostanin@gridagin.com>

* Adding MapR Binary & JSON YCSB Clients
* MapR binaries will be picked from the classpath

[accumulo, accumulo1.6, accumulo1.7, accumulo1.8] switch Accumulo to minor version specific bindings.

* break out accumulo modules
* add deprecation warning
* switch travis to use short hostname to get around long hostname error.

* remove mapkeeper and voldemort from command help, since we don't build them
* fix ordering of modules in root pom

closes #328

[hbase12] Add HBase 1.2+ specific client that relies on the shaded client artifact provided by those versions. (#970)

[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.