Fix the run test for the odk.py script.

When checking whether the odk.py script can be invoked, call it with the
`--help` option. Otherwise, it will exit with a non-zero code, which
will be interpreted as indicating that the script is not runnable
(which will in turn be interpreted as a sign that something went wrong
when building the ODK image).

Author: gouttegd

Makefile

@@ -37,7 +37,7 @@ test_odklite_programs:
 	@./tests/test-program.sh JINJANATOR jinjanate --version
 	@./tests/test-program.sh DICER-CLI dicer-cli --version
 	@./tests/test-program.sh SSSOM-CLI sssom-cli --version
-	@./tests/test-program.sh ODK odk.py
+	@./tests/test-program.sh ODK odk.py --help
 
 test_odkfull_programs: test_odklite_programs
 	@./tests/test-program.sh KONCLUDE Konclude -h