fix GH-1980 rspec file
Merge pull request #2242 from k77ch7/fix_GH-1980_rspec_file

Fix GH-1980 rspec file
Fix indentation.
Avoid CNFE by setting classloader resource of service .class.

When loading a .jar file, JRuby will also attempt to load a class
named *Service based on the require path of the jar, in order to
boot the extension the jar contains (if present). However this
usually fails, since requiring a jar is also the preferred way to
make a jar's contents available. As a result, every jar loaded by
a JRuby application triggers the *Service search, which usually
results in a ClassNotFoundException. Exceptions are expensive, so
this commit tries to actively look for the *Service.class rather
than falling into the heavier failure logic.
Disable regexp cache test because it just isn't deterministic.
Revert "Avoid CNFE by setting classloader resource of service .class."

This reverts commit 2e2924cdac97f44a1d0270603e96853d9cd02170.
Move -Pj2ee back under expected failures until we fix it.
Reinstate "Avoid CNFE by setting classloader resource of service .class."

This reverts commit 8794c4776a1d792ee7e6227dd0d67a28abae96fe.