Fix description of eviction size attribute

Recently, there has been some changes done for eviction in DMR:
https://github.com/wildfly/wildfly/commit/c252b2cf155f22c2e99e02075f3b5a2d8cc27349#diff-6c16cf3149991fdb5ebd08eb7b515d9fR209

So right now, the description of "Size" attribute is: The cache eviction configuration.
It is not clear, what size attribute is supposed to do and how it replaces the deprecated ones (max-entries, strategy).

Also, the eviction element vanished from jboss-as-infinispan_5_0.xsd:
https://github.com/wildfly/wildfly/commit/c252b2cf155f22c2e99e02075f3b5a2d8cc27349#diff-86cb92ad65fd80116b51f4d26e2fcaa2L287

Where can user find the eviction related configuration now?