LPS-34101 add isEligibleForEtag method for servers (like Jetty) that has its own support for ETags
LPS-34101 Source formatting
LPS-34101 removed capturing status as BufferCacheServletResponse already does that
LPS-34101 Remove import
LPS-34101 SF
Update Alloy to fef587; LPS-33799, LPS-33690