Fix deprecated CTEST submit method

CTestConfig.cmake

@@ -6,11 +6,7 @@
 ##   INCLUDE(CTest)
 set(CTEST_PROJECT_NAME "ScalFMM")
 set(CTEST_NIGHTLY_START_TIME "00:00:00 GMT")
-
-set(CTEST_DROP_METHOD "http")
-set(CTEST_DROP_SITE "cdash.inria.fr")
-set(CTEST_DROP_LOCATION "/CDash/submit.php?project=scalfmm")
-set(CTEST_DROP_SITE_CDASH TRUE)
+set(CTEST_SUBMIT_URL "http://cdash.inria.fr/submit.php?project=scalfmm")
 
 #--------------------------------------------------------------------
 # BUILDNAME variable construction