Switching forgerock maven repository to http://maven.forgerock.org/repo/community and opendj groupId to org.forgerock.ce.opendj since forgerock release repository not public anymore.

Prevent thead executor pool's queue to saturate when running large amount of sync entries

Setting ThreadPoolExecutor.maximumPoolSize to the nb of thread set by users through command line or default value (5) to avoir OutOfMemory error when too many entries are synchronized (> 50000).

Fixes out of memory error by changing the way large thead executor pool's queue fills up when running large amount of sync entries. This proposed solution uses a rejectedExecution handler, instead of terminating threads 15 minutes after shutdown signal was sent. When adding a new thread to an already full queue, the run command will wait until there is space available in the queue for the new thread.

Fixes http://tools.lsc-project.org/issues/862
Fixes http://tools.lsc-project.org/issues/748
Related to http://tools.lsc-project.org/issues/742
Originally discussed in https://lists.lsc-project.org/pipermail/lsc-users/2013-August/001584.html

Credit : http://stackoverflow.com/a/10353250/7436404

Signed-off-by: Soisik Froger <soisik.froger@gmail.com>

Fix travis tests failure : Tests are not executed in usual order in travis jdk 7 builds (cannot reproduce). This class mess up configuration and all tests executed after fail as a result.