Revert "Update for conan 2"

This reverts commit 051cb0f1

.gitlab-ci.yml

@@ -16,7 +16,7 @@ workflow:
   stage: build
   script:
     - conan profile detect --force
-    - conan create . python/${PYTHON_VERSION}@soleil/stable --build-require -s compiler.libcxx=libstdc++11 -c tools.system.package_manager:mode=install -c tools.system.package_manager:tool=yum -c tools.system.package_manager:sudo=True 
+    - conan create . python/${PYTHON_VERSION}@soleil/stable --build -s compiler.libcxx=libstdc++11 -c tools.system.package_manager:mode=install -c tools.system.package_manager:tool=yum -c tools.system.package_manager:sudo=True 
     - conan install python/${PYTHON_VERSION}@soleil/stable --install-folder ${PYTHON_ROOT}
     # Upgrade pip
     - unset PYTHONPATH