Add support for AtomicLong as PrimitiveAttributeType

[tewner]

Add "AtomicLong.class" to the list of primitive Attribute Types at isPrimitiveAttributeType(Class<?> clazz)
/zabbix_java/src/com/zabbix/gateway/JMXItemChecker.java line 248

AtomicLong is useful for making sure your stats are consistent over many JAVA threads. As such, they are often used as JMX attributes, and act just like "Long"s as far as Zabbix is concerned.

[richlv]

hmm. maybe that's something you could report as a feature request in https://support.zabbix.com ?