Support multiple SAML providers
Separate out saml config into its own file
Add sample login.yml config for how we want it to look
https://www.pivotaltracker.com/story/show/76918956
[#76918956]
Support multiple SAML providers
https://www.pivotaltracker.com/story/show/76918956
[#76918956]
Test case for IdentityProviderConfigurator
Test case for IdentityProviderDefinition.java