[maven-release-plugin] prepare release parent-1.2.3-rc1
[maven-release-plugin] prepare for next development iteration
Create DatabaseValidator, which will check that current database is valid
Add TableGenerator to generate id for MetricDetails entity
[maven-release-plugin] prepare release parent-1.2.3
[maven-release-plugin] prepare for next development iteration
Fix threadPoolOverflow problem
Add http exception in exchange client
Add comment about Oracle DB. Rename IdGenerator entity.
Refactor log message in Agent class
Fix logging
Change allocation size
Merge pull request #379 from kgribov/SutJVMversion

 JFG-582 Test data aggregation and writing to DB takes too much time
Merge pull request #381 from kgribov/KickThreads

JFG-542 Fix threadPoolOverflow problem
Merge branch 'master' of https://github.com/griddynamics/jagger into JFG-589

Conflicts:
	chassis/configuration/configuration/master/master.conf.xml
	chassis/core/src/main/java/com/griddynamics/jagger/engine/e1/aggregator/session/model/SessionData.java
	chassis/core/src/main/java/com/griddynamics/jagger/master/Master.java