HasAnyLabel returns true if atleast of kv pair of subset exists in set.

HasAnyLabel returns true if atleast one key from subset exists in set.

HasLabelKeys returns true if subset keys exist in set.

HasLabels returns true if subset kv mappings exist in set.

LabelsFromString "key1=value1,key2,key3=value3" to a key-value map.

LabeToString convert key-value map to "key1=value1,key2,key3=value3".

MergeLabels merge 2 key-value map to single key value map, overriding keys in old.