nixos/atlassian: Fix eval error in jrePackage

The error got introduced by 4f3d971e

,
which removed the *Text attributes from the option.

This in turn leads to an evaluation error while building the
manual/manpage, because oraclejre8 is marked unfree.

Signed-off-by: aszlig <aszlig@nix.build>
Cc: @jbgi, @orivej, @globin