- Disable randomly failing ENT test bnc#876674
- Added patches:
* haveged-conditional-enttest.patch

- Threads seem not to fix the random testsuite fail.

- Fix "stop" of service, the daemon in foreground actually
exits with a weird exit code. workaround this misbehaviour
in the service file.

- revert to non-forking service, "forking" services are racy
and provided by systemd purely for compatibility with old daemons.
see daemon(7) for the rationale. Only "simple" (default) and
"notify" services must be used if possible.
- Also, there is no haveged.conf around, neither such file
is parsed by the daemon at all.
- Start the daemon as soon as the random device is available with
the help of udev, as starting services while starved of entropy
is no good.