Add domain config for Azure AI

[duchamk]

• Resolves: Azure endpoint pattern domain name #660

[geoand]

Thanks a lot!

@csotiriou do you want to review?

[csotiriou]

@geoand @duchamk I approved this by mistake, sorry about that. I did find an issue.

Since this property is overridable, it should follow the same pattern as with endPointFor(), resourceNameFor(), and the @WithDefault would should only apply to the parent property, not the one that overrides the parent property.

Can we change that?

if not, I can create a new PR to alter this.

[geoand]

No problem!

Feel free to do a follow-up PR

[geoand]

@csotiriou ^