[PATCH v2 2/3] test-runner: start dbus with --start

[James Prestwood <prestwoj@gmail.com>]

Starts dbus-daemon as well as sets the right environment variables
so IWD can start (and any other dbus services).
---
 tools/run-tests | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

v2:
 - Rebased so it would apply cleanly.

diff --git a/tools/run-tests b/tools/run-tests
index 8f84c844..e45ffe46 100755
--- a/tools/run-tests
+++ b/tools/run-tests
@@ -1037,7 +1037,12 @@ atexit.register(exit_vm)
 runner.prepare_environment()
 
 if runner.args.start:
-	os.system(runner.args.start)
+	ctx = TestContext(runner.args)
+	ctx.start_dbus()
+	os.chdir(runner.args.testhome)
+	os.environ['DBUS_SYSTEM_BUS_ADDRESS'] = ctx.dbus_address
+
+	subprocess.run([runner.args.start])
 else:
 	run_tests(runner.args)
 
-- 
2.34.1