In many cases IDEs import into test configs Namespace-resources
with hardcoded versions of Spring & Spring Integration XSDs.
This may produce build issues with different Spring versions.
It also causes an issue during the transition to a new Spring Integration version (e.g. 3.0).
* Add Gradle task 'checkTestConfigs' to check test configs for hardcoded resources' versions.
* Add to 'test' task dependency on new task 'checkTestConfigs'
* Fix hadrcoded versions in the test configs.
JIRA: https://jira.springsource.org/browse/INT-2845