cleaning up message queue mock and subscription API

unittests/datapoollocal/CMakeLists.txt

@@ -1,7 +1,7 @@
 target_sources(${FSFW_TEST_TGT} PRIVATE
-	LocalPoolVariableTest.cpp
-	LocalPoolVectorTest.cpp
-	DataSetTest.cpp
-	LocalPoolManagerTest.cpp
+	testLocalPoolVariable.cpp
+	testLocalPoolVector.cpp
+	testDataSet.cpp
+  testLocalPoolManager.cpp
 	LocalPoolOwnerBase.cpp
 )