To begin able to have its own orekit datas :

Changed the .gitmodules to point to the orekit data oreczml that will not change.

.gitmodules

 [submodule "oreczml-core/src/test/resources/orekit-data"]
 	path = oreczml-core/src/test/resources/orekit-data
-	url = https://gitlab.orekit.org/orekit/orekit-data.git
+	url = https://gitlab.orekit.org/Zudo/orekit-data-ore-czml.git