add util

src/org/qg/ansible/Utiils.groovy

+// src/org/qg/ansible/Utils.groovy
+package org.qg.ansible;
+
+def partition(array, size) {
+    def partitions = []
+    int partitionCount = array.size() / size
+
+    partitionCount.times { partitionNumber ->
+        def start = partitionNumber * size 
+        def end = start + size - 1
+        partitions << array[start..end]    
+    }
+
+    if (array.size() % size) partitions << array[partitionCount * size..-1]
+    return partitions    
+}
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