Allow selection of specific 'azure' provider for custom routes based on provider name

[minhoryang]

Allow selection of specific 'azure' provider for custom routes based on provider name

[spikelu2016]

hey man, not sure if using name to select the desired provider setting is a good idea. this introduces side effects for the name field. the name field is only for human readability, and should not be used for selecting providers.

an alternative is to add a settingId field in step, and use settingId to select the desired provider