Updating shared-credentials.json for Hawaiian Airlines frequent flyer account merger with Alaska Airline's Atmo Rewards

[andylin2004]

Overall Checklist

• I agree to the project's Developer Certificate of Origin
• The top-level JSON objects are sorted alphabetically
• There are no open pull requests for the same update

for shared-credentials.json

• There's evidence the domains are currently related (SSL certificates, DNS entries, valid links between sites, legal documents etc.)
• If using shared, the new group serves login pages on each of the included domains, and those login pages accept accounts from the others. (For example, we wouldn't use a shared association from google.co.il to google.com, because google.co.il redirects to accounts.google.com for sign in.)
• If using from and to, the new group, the from domain(s) redirect to the to domain to log in.

When a user attempts to log into their frequent flyer account with Hawaiian Airlines, it redirects them to an Alaska Airlines hosted website (as the Alaska Airlines hosted website contains the Hawaiian Airlines frequent flyer accounts now, as part of Atmos Rewards).