selftests: rds: move test.py to TEST_FILES

The test.py should not be run separately. It should be run via run.sh,
which will do some sanity checks first. Move the test.py from TEST_PROGS
to TEST_FILES.

Reported-by: Maximilian Heyne <mheyne@amazon.de>
Closes: https://lore.kernel.org/netdev/20241122150129.GB18887@dev-dsk-mheyne-1b-55676e6a.eu-west-1.amazon.com
Fixes: 3ade6ce ("selftests: rds: add testing infrastructure")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Reviewed-by: Allison Henderson <allison.henderson@oracle.com>
Link: https://patch.msgid.link/20241124073243.847932-1-liuhangbin@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

tools/testing/selftests/net/rds/Makefile

@@ -3,10 +3,9 @@
 all:
 	@echo mk_build_dir="$(shell pwd)" > include.sh
 
-TEST_PROGS := run.sh \
-	test.py
+TEST_PROGS := run.sh
 
-TEST_FILES := include.sh
+TEST_FILES := include.sh test.py
 
 EXTRA_CLEAN := /tmp/rds_logs include.sh