add camel-case header values where needed. improve debug logging

uw-spring-security-core/src/main/java/edu/wisc/uwss/preauth/FederatedPreauthenticatedUserDetailsAttributeMapper.java

@@ -27,10 +27,10 @@ import java.util.Enumeration;
 public class FederatedPreauthenticatedUserDetailsAttributeMapper implements PreauthenticatedUserDetailsAttributeMapper {
 
     private String eppnHeader = "eppn";
-    private String pviHeader = "eduwisconsinspvi";
+    private String pviHeader = "eduWisconsinSPVI";
     private String usernameHeader = "eppn";
     private String fullNameHeader = "cn";
-    private String uddsHeader = "eduwisconsinudds";
+    private String uddsHeader = "eduWisconsinUDDS";
     private String emailAddressHeader = "mail";
     private String firstNameHeader = "givenName";
     private String lastNameHeader = "sn";
@@ -49,6 +49,7 @@ public class FederatedPreauthenticatedUserDetailsAttributeMapper implements Prea
      */
     @Override
     public UWUserDetails mapUser(HttpServletRequest request) {
+        logger.debug("enter mapUser, available headers: {}", request.getHeaderNames());
         String eppn = request.getHeader(eppnHeader);
         logger.debug("enter mapUser, eppnHeader {} was {}", eppnHeader, eppn);
         if(StringUtils.isBlank(eppn)) {