Created stub interfaces, classes and methods to handle SSL certificates assignment to load balancers (#670)
#631

Auto Scale Groups Filtering
#631 auto scaling group filtering. backwards compatibility is done for tests
Renamed ServerCertificate -> SSLCertificate (#670)
Implemented AWS working with SSL certificates, not tested yet (#670)
Merge branch 'develop' into issue-670
Added SSLCertificateId as an attribute of LB listener, so that SSL certificates of a load balancer can be set and fetched (#670)
Merge branch 'develop' into issue-670
Renamed certificateName -> certificateId, certificateResourceId/arn -> providerCertificateId, certificateId - removed (#670)
Added toString() implementation (#670)
Merge branch 'develop' into issue-670
Simplified SSL certificates API: got rid of SSLCertificateMetadata; setting SSL on LB takes certificateId instead of Arn (#670)
Using sslCertificateId in LbListener instead of Arn (#670)
Renamed uploadDate -> createdTimestamp; body and chain not fetched when listing certificates (#670)
Renamed certificateId to certificateName (#670)
Merge pull request #55 from TheWeatherCompany/issue-670

https://github.com/TheWeatherCompany/grid-api/issues/670 Added SSL Certificate support for load balancers.