Fix gt vs lt on the nodejs default and compare with st2chatops_version instead of st2_version

Author: winem

roles/StackStorm.nodejs/defaults/main.yml

@@ -1,3 +1,3 @@
 ---
 # nodejs version to install
-nodejs_major_version: "{% if st2_version == 'latest' or st2_version is version('3.5.0', '<') %}14{% else %}10{% endif %}"
+nodejs_major_version: "{% if st2chatops_version == 'latest' or st2chatops_version is version('3.5.0', '>=') %}14{% else %}10{% endif %}"