Continuous "javax.security.auth.login.FailedLoginException: Password does not match" error in JBoss Fuse 6.1 log file after R2 patch applied

Issue

After applied R2 patch to my JBoss Fuse 6.1 fabric containers, I was getting continuous 'Login failed' errors (several per second):

2015-05-07 16:03:44 WARN
Logger: io.fabric8.git.http.GitSecureHttpContext
Class: io.fabric8.git.http.GitSecureHttpContext Method: doAuthenticate File: GitSecureHttpContext.java:161
Thread: qtp1420404627-309
Bundle Name: io.fabric8.fabric-git-server Bundle ID: 102 Bundle Version: 1.0.0.redhat-429

Message:
1
Login failed

Stack Trace:
javax.security.auth.login.FailedLoginException: Password does not match
at io.fabric8.jaas.ZookeeperLoginModule.login(ZookeeperLoginModule.java:141)
at org.apache.karaf.jaas.boot.ProxyLoginModule.login(ProxyLoginModule.java:83)[karaf-jaas-boot.jar:]
at sun.reflect.GeneratedMethodAccessor22.invoke(Unknown Source)