JRuby reflective access & deprecation warnings

[nickcharlton]

On CI (example build), we're getting the following set of deprecation warnings on JRuby:

WARNING: An illegal reflective access operation has occurred
874WARNING: Illegal reflective access by org.jruby.ext.openssl.SecurityHelper (file:/home/travis/.rvm/rubies/jruby-head/lib/ruby/stdlib/jopenssl.jar) to constructor java.security.cert.CertificateFactory(java.security.cert.CertificateFactorySpi,java.security.Provider,java.lang.String)
875WARNING: Please consider reporting this to the maintainers of org.jruby.ext.openssl.SecurityHelper
876WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
877WARNING: All illegal access operations will be denied in a future release
878[DEPRECATED] The --binstubs option will be removed in favor of `bundle binstubs`

[pboling]

This is probably no longer an issue on non-EOL JRuby. I talked with @headius a few days ago and he suggested that it is best to not test tools on EOL JRuby, because there will be no support for them at all, and it is a waste of resources. Users of JRuby need to be more attentive to upgrade cycles than users of MRI ruby, because the resources avaialable to support JRuby are limited, and in order to succeed it has to focus. I've never seen this error in my recent extensive use of appraisal & appraisal2 on JRuby.

Which is all to say, this can probably be closed.