run_tests.sh was updated to version 2018.11.21

Script source: https://gerrit.mcp.mirantis.com/#/admin/projects/salt-formulas/cookiecutter-salt-formula

Change-Id: Ifd87ab003e29d8d969947963fcfbcadad0fb710d
Related-PROD: PROD-26201
diff --git a/tests/test-requirements.txt b/tests/test-requirements.txt
new file mode 100644
index 0000000..a0f561a
--- /dev/null
+++ b/tests/test-requirements.txt
@@ -0,0 +1,2 @@
+jsonschema
+reno