maintenance tests: differentiate codestreams

[m-ildefons]

Differentiate codestreams from repos. During maintenance testing repos are to be used to ensure that the environment matches what we expect to find at customer sites. Hoevewer in the future, we may want to test against codestreams too, so a list of relevant codestreams is kept at the ready.

Signed-off-by: Moritz Röhrich [email protected]