test-all.sh: Reverting an accidental edit

In the previous commit, I accidently also edited another line than intended and
missed to see the accident before committing.
This commit reverts that accident.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@oss.bmw-carit.de>

scripts/test-all.sh

@@ -102,7 +102,7 @@ bake_all () {
     # Init the build environment
     cd "$path_to_project_root_relative_to_script"
     build_directory=build
-    source ./oe-init-env $build_directory
+    source ./oe-init-build-env $build_directory
 
     # Go to the meta-ros git repository location to gather information about commits.
     cd ../meta-ros