Add label option to snmp ckecks

Add label option to snmpv3 and snmp snmp-interface commands. Based on attached files to ticket #7545.

fixes #7545

Signed-off-by: Gunnar Beutner <gunnar.beutner@netways.de>
Remove the __parent field in the DynamicObject class

refs #7748
Fix crash in CreateCert

fixes #7862
Fix incorrect operators in GelfWriter::NotificationToUserHandler

fixes #7866
Remove the BuildRequires for yajl-devel (on RHEL 6) because their package is broken

refs #7463
Implement support for arrays in command arguments