VSTS Configuration: https://blog.xamarin.com/continuous-integration-for-ios-apps-with-visual-studio-team-services/
OSX Build Agent: https://github.com/Microsoft/vsts-agent/blob/master/docs/start/startosx.md
VSTS Agent GitHub: https://github.com/Microsoft/vsts-agent
VSTS Tasks GitHub: https://github.com/Microsoft/vsts-tasks
MacInCloud iOS Build Configuration:
https://support.macincloud.com/support/solutions/articles/8000016614-getting-started-with-the-macincloud-vsts-previously-vso-build-agent-plan
https://support.macincloud.com/support/solutions/articles/8000043373-signing-and-provisioning-in-vsts-build-xamarin-ios-solution-step-with-macincloud-vsts-agent
Issues:
1. security:SecKeychainItemImport:MAC verification failed during PKCS12 import(wrongpassword?)
.p12文件密码强度可能不够 (Reference: http://doc.wex5.com/p12-password-problems/)