Initial dataset_helpers cleanup
Initial dataset_helpers cleanup

git-svn-id: https://svn.apache.org/repos/asf/incubator/climate/trunk@1563544 13f79535-47bb-0310-9956-ffa450edef68

Former-commit-id: c2d63151df6156b449b2b2610608647e20d605df
MJJoyce/climate,apache/climate,MBoustani/climate,pwcberry/climate,MBoustani/climate,kwhitehall/climate,lewismc/climate,MJJoyce/climate,pwcberry/climate,apache/climate,agoodm/climate,pwcberry/climate,pwcberry/climate,MBoustani/climate,lewismc/climate,riverma/climate,agoodm/climate,lewismc/climate,Omkar20895/climate,jarifibrahim/climate,jarifibrahim/climate,pwcberry/climate,huikyole/climate,jarifibrahim/climate,kwhitehall/climate,MBoustani/climate,agoodm/climate,agoodm/climate,riverma/climate,lewismc/climate,MJJoyce/climate,riverma/climate,MJJoyce/climate,huikyole/climate,agoodm/climate,MBoustani/climate,MJJoyce/climate,lewismc/climate,huikyole/climate,riverma/climate,apache/climate,jarifibrahim/climate,Omkar20895/climate,kwhitehall/climate,Omkar20895/climate,apache/climate,kwhitehall/climate,riverma/climate,Omkar20895/climate,Omkar20895/climate,huikyole/climate,jarifibrahim/climate,huikyole/climate,apache/climate