AthenaServices: fix AthenaOutputStream unit test
Use LOG_SELECT instead of LOG_IGNORE to make the test less sensitive to DEBUG message changes. Also fix ERROR message by instantiating DetectorStore.
Required for Gaudi v36r13.
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Use LOG_SELECT instead of LOG_IGNORE to make the test less sensitive to DEBUG message changes. Also fix ERROR message by instantiating DetectorStore.
Required for Gaudi v36r13.