Enable run_model_validate tests

  * Alligh Makefile and run_tests.sh to latest
  * Link modules
  * Fix server-stratum schema

EME-19

Change-Id: I98ef59436994a6f79ad595bc3c7fe0a8909cf4c0
diff --git a/tests/pip_requirements.txt b/tests/pip_requirements.txt
new file mode 100644
index 0000000..d89304b
--- /dev/null
+++ b/tests/pip_requirements.txt
@@ -0,0 +1 @@
+jsonschema