Exclude IntVAR, DoubleVAR, etc. from javadoc
Exclude IntVAR, DoubleVAR, etc. from javadoc

[ci skip]

apache/incubator-datafu,shaohua-zhang/incubator-datafu,shaohua-zhang/incubator-datafu,apache/incubator-datafu,apache/incubator-datafu,shaohua-zhang/incubator-datafu,apache/incubator-datafu,shaohua-zhang/incubator-datafu,apache/incubator-datafu,shaohua-zhang/incubator-datafu