Merge pull request #3212 from didiez/master

KEYCLOAK-3513 Prevent clearing all registered sessions when invalidating some by sessionId

adapters/oidc/spring-security/src/main/java/org/keycloak/adapters/springsecurity/management/HttpSessionManager.java

@@ -69,6 +69,5 @@ public class HttpSessionManager implements HttpSessionListener, UserSessionManag
                 session.invalidate();
             }
         }
-        sessions.clear();
     }
 }