test: move TEST-01-BASIC setup to static files

After this commit, only tests that were converted will work, because the
interface to test_run() changed.

test/units/end.service

@@ -1,6 +1,6 @@
 [Unit]
 Description=End the test
-After=testsuite.service
+After=testsuite.target
 OnFailure=poweroff.target
 OnFailureJobMode=replace-irreversibly
 

test/units/testsuite-01.service

@@ -0,0 +1,7 @@
+[Unit]
+Description=TEST-01-BASIC
+After=multi-user.target
+
+[Service]
+ExecStart=sh -e -x -c 'systemctl --state=failed --no-legend --no-pager >/failed ; systemctl daemon-reload ; echo OK >/testok'
+Type=oneshot