Make service config optional in generic service
Make service config optional in generic service

This commit makes the management of the service
in the generic service class optional.

Now, if service names are false, it is assumed the
generic service does not have a service on that
platform.

slystopad/fuel-lib,huntxu/fuel-library,huntxu/fuel-library,stackforge/fuel-library,xarses/fuel-library,SmartInfrastructures/fuel-library-dev,ddepaoli3/fuel-library-dev,slystopad/fuel-lib,SmartInfrastructures/fuel-library-dev,eayunstack/fuel-library,eayunstack/fuel-library,eayunstack/fuel-library,ddepaoli3/fuel-library-dev,eayunstack/fuel-library,stackforge/fuel-library,huntxu/fuel-library,Metaswitch/fuel-library,huntxu/fuel-library,zhaochao/fuel-library,stackforge/fuel-library,SmartInfrastructures/fuel-library-dev,Metaswitch/fuel-library,ddepaoli3/fuel-library-dev,zhaochao/fuel-library,xarses/fuel-library,xarses/fuel-library,zhaochao/fuel-library,Metaswitch/fuel-library,eayunstack/fuel-library,zhaochao/fuel-library,xarses/fuel-library,zhaochao/fuel-library,huntxu/fuel-library,SmartInfrastructures/fuel-library-dev,ddepaoli3/fuel-library-dev,slystopad/fuel-lib,Metaswitch/fuel-library,slystopad/fuel-lib,stackforge/fuel-library,ddepaoli3/fuel-library-dev,SmartInfrastructures/fuel-library-dev