message: ENH: Prefer https vs http for ctest submission.
diff: set(CTEST_PROJECT_NAME "RTK")
  set(CTEST_NIGHTLY_START_TIME "1:00:00 UTC")
  -set(CTEST_DROP_METHOD "http")
  +set(CTEST_DROP_METHOD "https")
  set(CTEST_DROP_SITE "my.cdash.org")
  set(CTEST_DROP_LOCATION "/submit.php?project=RTK")
  set(CTEST_DROP_SITE_CDASH TRUE)
  