Eliminate use of L1/HLT ConfigSvc XML infromation in L1 decoder

Merged Tomasz Bold requested to merge tbold/athena:l1decoder-no-confsvc into master

Removes usage of information provided via legacy menu XML files from the L1 decoder. For that needed to make the LVL1 and HLT services to be "force" created. FI @smh Tagging @stelzer @mark
Also, printout in CA was expanded to show is a service will be created even if no clients request it.

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