Description of problem:
This issue was discovered in the integration pack for Fuse. The SwitchYard component is using the SimpleRuntimeEnvironment to add decision tables resources. But there is bug in the class that causes the decision table to be ignored if it specifies the dtable configuration directly.

This is related to the following commits:
https://github.com/droolsjbpm/jbpm/commit/79f3b2f7ce0721cc1022db9036a89526affe312b
https://github.com/droolsjbpm/jbpm/commit/bbe57748db0c93b7f59a3ad9e6f22f38447962c8

The issue has already been fixed on master, so it just needs to be cherry-picked into 6.2.x:
https://github.com/droolsjbpm/jbpm/commit/7ef3451146a84bd6cdc6cd36894a3c0ced5ebd9f