Added config option for authorization service instead of hard-coded one

[svycka]

There are problems with migration to laminas I can't change Zend\Authentication\AuthenticationService to Laminas\Authentication\AuthenticationService
then I add an alias in service manager for this but in some cases, I can't use this workaround and would be nice if this would be not hardcoded.
now you can just add to config this

'zfc_rbac' => [
  'authentication_service' => 'Laminas\Authentication\AuthenticationService' // or 'zfcuser_auth_service' in case of zfcUser
];

This is not a BC break because default still is Zend\Authentication\AuthenticationService

[coveralls]

Coverage increased (+0.5%) to 93.443% when pulling a103d30 on svycka:hardcoded-authorization-service into 8a28d65 on ZF-Commons:master.

[prolic]

we probably should migrate to laminas and get rid of zend* deps. @basz, thoughts?

[svycka]

@prolic even if you migrate, this would still be useful don't you think? Anyway, having this hardcoded was bad idea in the first place.

[basz]

I agree with @svycka . this should be merged regardless of the state of #392 or #393