Set up public HTTPS endpoint for RSKj

refs #325

roles/rskj_testnet.rb

@@ -0,0 +1,19 @@
+name 'rskj_testnet'
+
+default_attributes 'rskj' => {
+  'network' => 'testnet',
+  'nginx' => {
+    'domain' => 'rsk-testnet.kosmos.org'
+  }
+}
+
+default_run_list = %w(
+  kosmos_rsk::rskj
+  kosmos_rsk::nginx
+)
+
+env_run_lists(
+  '_default' => default_run_list,
+  'development' => default_run_list,
+  'production' => default_run_list
+)