RH-SSO: Role mappers won't map roles with dots in them.

Issue

• I get the following exception during login

  ERROR [org.keycloak.services.error.KeycloakErrorHandler] (default task-13) Uncaught server error: org.keycloak.broker.provider.IdentityBrokerException: Could not process response from SAML identity provider.
          at org.keycloak.broker.saml.SAMLEndpoint$Binding.handleLoginResponse(SAMLEndpoint.java:457)
          at org.keycloak.broker.saml.SAMLEndpoint$Binding.handleSamlResponse(SAMLEndpoint.java:492)
          at org.keycloak.broker.saml.SAMLEndpoint$Binding.execute(SAMLEndpoint.java:243)
          at org.keycloak.broker.saml.SAMLEndpoint.postBinding(SAMLEndpoint.java:159)
          at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
          at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
          at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
          at java.lang.reflect.Method.invoke(Method.java:498)
          at org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:140)
          at org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTarget(ResourceMethodInvoker.java:295)
          at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:249)
          at org.jboss.resteasy.core.ResourceLocatorInvoker.invokeOnTargetObject(ResourceLocatorInvoker.java:138)
          at org.jboss.resteasy.core.ResourceLocatorInvoker.invoke(ResourceLocatorInvoker.java:107)
          at org.jboss.resteasy.core.ResourceLocatorInvoker.invokeOnTargetObject(ResourceLocatorInvoker.java:133)
          at org.jboss.resteasy.core.ResourceLocatorInvoker.invoke(ResourceLocatorInvoker.java:101)
          at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:406)
          at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:213)
          at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:228)
          at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:56)
          at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:51)
          at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
          ...
  Caused by: org.keycloak.broker.provider.IdentityBrokerException: Unable to find role: role1.roleA
          at org.keycloak.broker.saml.mappers.AttributeToRoleMapper.updateBrokeredUser(AttributeToRoleMapper.java:143)
          at org.keycloak.services.resources.IdentityBrokerService.updateFederatedIdentity(IdentityBrokerService.java:960)
          at org.keycloak.services.resources.IdentityBrokerService.authenticated(IdentityBrokerService.java:570)
          at org.keycloak.broker.saml.SAMLEndpoint$Binding.handleLoginResponse(SAMLEndpoint.java:453)
          ... 66 more