Add jsonschema for docker formula

Update run_tests.sh to latest version.

Change-Id: Ia5d9407d101c0f71d273423d28c0c56288300e63
Related-prod: #PROD-20623 (PROD:20623)
diff --git a/metadata.yml b/metadata.yml
index 4131e83..d2c3f00 100644
--- a/metadata.yml
+++ b/metadata.yml
@@ -1,3 +1,6 @@
 name: "docker"
 version: "0.2"
 source: "https://gerrit.mcp.mirantis.com/salt-formulas/docker"
+dependencies:
+- name: linux
+  source: "https://gerrit.mcp.mirantis.com/salt-formulas/linux"