Jason Tedor 75da71ff0b Forbid use of java.security.MessageDigest#clone()
This commit forbids the usage of java.security.MessageDigest#clone() in
favor of getting a thread local instance using
org.elasticsearch.common.hash.MessageDigests. This is to prevent running
into java.lang.CloneNotSupportedExceptions for message digest providers
that do not support clone.

Closes #16543
2016-02-09 11:35:47 -05:00
..