TomEE 8.0.9 introduce ehcache-3.8.1.jar in lib folder

[David Bonnafous]

hi,

I can't figure out why and how TomEE 8.0.9 introduced ehcache-3.8.1.jar in
the lib folder.

It's produced a defect for me: a conflict of version.
https://github.com/primefaces/primefaces/issues/9042#issue-1320910980

Thank you.

--
David Bonnafous