Fix EPP session timeout

[artur-intech]

@ratM1n @teadur

• There is a new rake task epp:clear_expired_sessions. It should be scheduled to run periodically, depending on how often we want to purge expired sessions. Needed to be run manually on deploy, or otherwise nobody will be able to login.
• New setting https://github.com/internetee/registry/pull/1331/files#diff-fc5026eef1f4752ef71315b36727e708R161

Fixes #711

[teadur]

@artur-beljajev why does not running the cleanup break logging in ?
Whats the behviour when i just restart the application ?

[artur-intech]

@teadur

• Why any logging is needed here?
• Behavior is not dependent on restart

[vohmar]

this branch returns this error on running passenger:
[Mon Oct 07 10:38:20 2019] [crit] [client 192.168.2.45] configuration error: couldn't perform authentication. AuthType not set!: /epp/session/hello

this is from Apache log - starting application fails.

[artur-intech]

[Mon Oct 07 10:38:20 2019] [crit] [client 192.168.2.45] configuration error: couldn't perform authentication. AuthType not set!: /epp/session/hello

@ratM1n
Does the issue still persist? If so, then something is misconfigured on server side. Are there some mod_epp remnants?

[yulgolem]

Fixed some style & tests, let's check this.

[vohmar]

• epp:clear_expired_sessions rake tasks clear epp_sessions table, while it should only remove expired sessions (where now - updated_at is more than epp_session_timeout_seconds)

[yulgolem]

The timeout variable was not set in the deploy script.
Added default timeout value of 300 sec, added test to see if task destroys only expired sessions.