Add test_runner service

This is a new service with client and provider that can be
used for running tests in a secure processing environment
and retrieving the results.  The test_runner provider allows
for arbitrary test farmework backends.  The goal is to
have a cpputest backend.  In this commit, a mock backend
is included for testing the service itself.  The service
has its own access protocol defined under the protocols
top-level directory.

Signed-off-by: Julian Hall <julian.hall@arm.com>
Change-Id: If4e965c110763bd805abbdcb87e7e03cd76248b2
diff --git a/deployments/env-test/opteesp/env_test_config.h b/deployments/env-test/opteesp/env_test_config.h
new file mode 100644
index 0000000..8ed4a7e
--- /dev/null
+++ b/deployments/env-test/opteesp/env_test_config.h
@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) 2021, Arm Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef ENV_TEST_CONFIG_H
+#define ENV_TEST_CONFIG_H
+
+#include <ffa_api.h>
+
+/**
+ * Loads the SP specific configuration passed as SP initialization parameters.
+ */
+void load_sp_config(struct ffa_init_info *init_info);
+
+
+#endif /* ENV_TEST_CONFIG_H */