Prevent single character, punctuation org_name in auth_DB

#### Description
In the March 1, 2021 Quarterly review Meng noted "Some orgs have very short name like ‘.’, should we make some restrictions like at least 1 letter?"

**BA analysis is required to confirm restrictions, if any in BCOL, and then identify which restrictions should exist in the Business Registry. It seems reasonable, at a minimum, to require 1 letter.**

#### Tasks
- [ ] When ticket has been created, post the ticket in RocketChat '#Operations Tasks' channel
- [ ] Add **entity** or **relationships** label to zenhub ticket
- [ ] Add 'Priority1' label to zenhub ticket
- [ ] Assign zenhub ticket to milestone: current, and place in pipeline: sprint backlog
- [ ] Reply All to IT Ops email and provide zenhub ticket number opened and which team it was assigned to
- [ ] Dev/BAs to complete work & close zenhub ticket
- [ ] Author of zenhub ticket to mark ServiceNow ticket as resolved or ask IT Ops to do so

Start by confirming with BA analysis which organization-name restrictions exist in BCOL and which should apply to the Business Registry. Then locate the auth_DB validation entry point; done means the agreed restrictions are implemented and the ZenHub, RocketChat, email, and ServiceNow follow-up tasks are completed.

Written by the indexing model from the issue text.