Unstuck deposit tests failing the docker-dev and icinga-plugins

The recent deposit v0.7.0 changed a bit some implementation part.

In the current case, the xmlns namespace are now used correctly. So the icinga-plugins repository should change a bit its xml to respect that. This results in builds in error both in docker-dev and icinga-plugins [1] [2] [3] (it's the same tests).

Note: To be clear, the deposit tests in themselves are fine and in adequation with their implementations.