Don't uppercase field names for CSV sources

[arch0345]

Looks like we're getting bitten by a KeyError here again. Something in our pipeline is upper-casing CSV row names. Last time I looked at this I couldn't figure out where/why we're doing this. It involves a change to the batch-machine code, I think.

Originally posted by @iandees in openaddresses/openaddresses#7395 (comment)

cc @ingalls

[skylarmt]

Something in our pipeline is upper-casing CSV row names.

Is it

batch-machine/openaddr/conform.py

Line 919 in 73f9e9f

source_x = source_row[lon_name.upper()]

as suggested by andrewharvey in openaddresses/openaddresses#5554?

Fixing a longstanding bug and closing three other issues and two pull requests can't be as easy as removing two little .upper() statements, can it?