OOD deploy time config changes

Closes https://gitlab.rc.uab.edu/rc/hpc-factory/-/issues/214

Closes #248

This MR contains deploy time changes in the OOD config to

1. Accept connections only from OOD proxy
2. Point the shell app to the desired host
3. Fix for shell app timeout issue.
4. Modify account app binding to listen to http-proxy

ansible/group_vars/all

@@ -94,6 +94,7 @@
   centos_base_url: "http://vault.centos.org"
 
 # ood_config
+  enable_ood_config: false
   ood_internal_ip: OOD_INTERNAL_IP
   ood_hostname: ood-gpfs5
   ood_domain: https://rc.uab.edu