MultiMap migration issue
Initial work exector improvements in TestApp
Solves problem with QueryBuilder and key

When a key is selected on the querybuilder, it isn't 'unset'. Meaning that all
gets are done on the key, not on the value. This commit fixes that problem
javadoc fixes for methods w/ a MultiExecutionCallback param
Added the executor simulate load to the TestApp
More tweaking for load simulation; now it is easy to scale up and scale out
Merge pull request #1031 from ispringer/master

javadoc fixes for methods w/ a MultiExecutionCallback param
Merge pull request #1032 from pveentjer/improvement/3.x/testapp-executor-simulation

Improvement/3.x/testapp executor simulation
Merge pull request #1028 from pveentjer/fix/3.x/querybuilder-key

Solves problem with QueryBuilder and key
Merge pull request #1017 from gurbuzali/fix/3.x/multi-map-migration-master

MultiMap migration issue
retryable requests continue endlessly even there is no cluster
Small refactor in event service.
Merge pull request #1034 from gurbuzali/fix/3.x/retryable-request-master

retryable requests continue endlessly even there is no cluster