Target Java 17

[mikejritter]

Various updates to get compilation working on java 17

• Update compiler target
• Update easymock, ehcache, commons-lang3 dependencies
• Update ehcache usage for new version
• Fix package for imports in Morsel
• Disable selenium tests

I think the ehcache updates are equivalent to the old configuration. The Iterators changes comes from ehcache.xml which can be removed. It also looks like that class might be able to be removed -- it's only used by IteratorsTest so I'm not sure what it was for.

The update in the loopingduptaskproducer AppDriver I think is ok, but should be tested more thoroughly.

I disabled the selenium tests, we'll need to look into updating that both here and in duracloud.

@dbernstein

[dbernstein]

This looks good but I believe you'll need to add https://github.com/duracloud/mill/commit/b3c0129db920917e6e93efb0b4afdd9cccd604c0 (Java 17 in the docker file) for the containers to run properly.