Ci one job

Put all CI in a single Job and stop all the problems!

This is rather sad, but it's working and OK skips all the bugs in GitLabCI.

src/test/gtest/CMakeLists.txt

@@ -31,7 +31,7 @@ ExternalProject_Add(googletest
     PREFIX "${CMAKE_CURRENT_BINARY_DIR}"
     # Disable install step
     INSTALL_COMMAND ""
-    UPDATE_DISCONNECTED 1
+    UPDATE_DISCONNECTED 1 # 1: do not update googletest; 0: update googletest via github
 )
 
 # Get GTest source and binary directories from CMake project