GUACAMOLE-393: Merge add extension logout/shutdown hooks

extensions/guacamole-auth-cas/src/main/java/org/apache/guacamole/auth/cas/CASAuthenticationProvider.java

@@ -107,4 +107,9 @@ public class CASAuthenticationProvider implements AuthenticationProvider {
 
     }
 
+    @Override
+    public void shutdown() {
+        // Do nothing
+    }
+
 }

extensions/guacamole-auth-duo/src/main/java/org/apache/guacamole/auth/duo/DuoAuthenticationProvider.java

@@ -102,4 +102,9 @@ public class DuoAuthenticationProvider implements AuthenticationProvider {
         return context;
     }
 
+    @Override
+    public void shutdown() {
+        // Do nothing
+    }
+
 }

extensions/guacamole-auth-header/src/main/java/org/apache/guacamole/auth/header/HTTPHeaderAuthenticationProvider.java

@@ -107,4 +107,9 @@ public class HTTPHeaderAuthenticationProvider implements AuthenticationProvider
 
     }
 
+    @Override
+    public void shutdown() {
+        // Do nothing
+    }
+
 }

extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-base/src/main/java/org/apache/guacamole/auth/jdbc/InjectedAuthenticationProvider.java

@@ -104,4 +104,9 @@ public abstract class InjectedAuthenticationProvider implements AuthenticationPr
                 authenticatedUser, credentials);
     }
 
+    @Override
+    public void shutdown() {
+        // Do nothing
+    }
+
 }

extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-base/src/main/java/org/apache/guacamole/auth/jdbc/sharing/user/SharedUserContext.java

@@ -204,4 +204,9 @@ public class SharedUserContext implements UserContext {
         return Collections.<Form>emptyList();
     }
 
+    @Override
+    public void invalidate() {
+        // Nothing to invalidate
+    }
+
 }

extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-base/src/main/java/org/apache/guacamole/auth/jdbc/user/ModeledUserContext.java

@@ -191,4 +191,9 @@ public class ModeledUserContext extends RestrictedObject
         return ModeledSharingProfile.ATTRIBUTES;
     }
 
+    @Override
+    public void invalidate() {
+        // Nothing to invalidate
+    }
+
 }

extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-base/src/main/java/org/apache/guacamole/auth/jdbc/user/RemoteAuthenticatedUser.java

@@ -136,4 +136,9 @@ public abstract class RemoteAuthenticatedUser implements AuthenticatedUser {
         return authenticationProvider;
     }
 
+    @Override
+    public void invalidate() {
+        // Nothing to invalidate
+    }
+
 }

extensions/guacamole-auth-ldap/src/main/java/org/apache/guacamole/auth/ldap/LDAPAuthenticationProvider.java

@@ -103,5 +103,10 @@ public class LDAPAuthenticationProvider implements AuthenticationProvider {
         return context;
     }
 
+    @Override
+    public void shutdown() {
+        // Do nothing
+    }
+
 }
 

extensions/guacamole-auth-ldap/src/main/java/org/apache/guacamole/auth/ldap/user/UserContext.java

@@ -229,4 +229,9 @@ public class UserContext implements org.apache.guacamole.net.auth.UserContext {
         return Collections.<Form>emptyList();
     }
 
+    @Override
+    public void invalidate() {
+        // Nothing to invalidate
+    }
+
 }