Benjamin Douglas be3cfda3ce Disable Jackson FAIL_ON_INVALID_SUBTYPE in feign (#5597)
* Disable Jackson FAIL_ON_INVALID_SUBTYPE in feign

With this change, Jackson does not fail even if it doesn't recognize a
discriminator type name. This is helpful when upgrading a microservice with
a new subtype while keeping compatibility with its old clients. The instance
is returned as null instead of throwing an exception deep in the feign
framework, allowing clients to gracefully degrade.

* Disable FAIL_ON_INVALID_SUBTYPE for all Jackson-based projects
2017-05-16 21:20:05 +08:00
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