FELIX-4294: Added getClassName,getServices,getServiceProperties,getId methods

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1550885 13f79535-47bb-0310-9956-ffa450edef68
FELIX-4294: added toString method for shell improvement

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1550886 13f79535-47bb-0310-9956-ffa450edef68