Stephen Doxsee a7a9271313 Client OAuth2 properties to use scope not scopes
OAuth2ClientProperties.Registration (which captures .properties and
.yml for OAuth2 Client) has a member `scope` but not `scopes`. Samples
and documentation were using `scopes` and have now been updated to use
`scope`.

Fixes gh-6510
2019-02-08 11:54:18 -05:00
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