Create continous testing facility

[atooni]

Currently blended has integration test support, so that docker images are created from the build process and the test suite is executed once against a network of intra-connected blended containers.
We want to enhance this feature, so that a test case can be deployed into a test container to be executed by scheduler or other events.
The overall goal is to automatically deploy a network of related blended containers via kubernetes together with the test driver, so that a continuous test is running. This implies that we must have the possibility to track successful / failed tests over time.