modified hdp-mkdir so it accepts -p because it is annoying that it throws an error if directory exists -> it should just be a no-op
modified hdp-mkdir so it accepts -p because it is annoying that it throws an error if directory exists -> it should just be a no-op

infochimps-labs/wukong,infochimps-labs/wukong,infochimps-labs/wukong,infochimps-labs/wukong,infochimps-labs/wukong