* Closes#5863
The "dateLibrary" option for java, sadly, sets a mustache value "java8". This change updates this so that "java" in the mustache
libraries means what it should mean - use all java8 classes. In this case, there's no need for the third party Base64 library
as java8's JDK has this built in. In my view, the "dateLibrary" should be deprecated but that should be a separate PR.
* updated samples
* fixed tests for new CLI java8
* regenerated samples after master merge
* oops - left in an end tag after master merge
* rerun checks
* rerun checks
* update dep for java jersey1, jersey2
* update sbt dependency for jersey2
* update dep for java okhttp-gson, resteasy, resttemplate
* update dep for java retrofit 1.x, 2.x
* update java petstore samples
* 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
