Story #2923: Per environment firewall configurations need to be fixed
Change dataone-cn-portal postinst to open 5432 to each CN
At the moment, the dataone-cn-portal postinst script modifies pg_hba.conf to allow postgres access for each CN. In the same for loop, we should also be opening the firewall on port 5432 for the CN IPs per environment. Change in the trunk and merge to DATAONE_CN_PORTAL_v1.0.0 branch.