Automate Throwing invalid FQDN error while adding Infra Server

[kalroy]

Describe the bug

Customer is attempting to add a Chef Infra Server to Chef Automate via the UI. The FQDN is coming back as Invalid, as the last bit of the FQDN is ".internal", which goes over the limit of up to 5 characters in length per the regex on that validator: ^(http://www.|https://www.|http://|https://)?[a-zA-Z0-9_]+([-.]{1}[a-zA-Z0-9]+).[a-zA-Z]{2,5}(:[0-9]{1,5})?(/.)?$

chef/customer-bugs#340

To Reproduce

Steps to reproduce the behavior:

• Go to Automate UI > Infrastructure > Chef Servers and click Add Chef Server.
• Enter in chef.internal tin FQDN field; anything else valid in other two fields
• Observer the error "FQDN is Invalid" when submitted

Expected behavior

Automate should not throw "FQDN is invalid" error

Screenshots

Aha! Link: https://chef.aha.io/epics/SH-E-361