Configure cache stores explicitly

There were problems with the cache store. The test environment used data
from the production environment and vica versa. The default caching
system is file store. Since it did not clean it up, somehow the same
cached data was used in the respective environment. Now the cache store
is set explicitly for every environment.

Signed-off-by: Konrad Reiche <konrad.reiche@gmail.com>
Complete simple requests tests for repositories

Just completed the still quite simple request tests by automating the
click to an element.

Signed-off-by: Konrad Reiche <konrad.reiche@gmail.com>