RBR engineering file import cleanup

[ggalibert]

See PR #556

[ocehugo]

Guys, I would like to improve our test coverage for this particular manufacturer, since a new/modified parser will be introduced.

ATM, we got 9 files in the testing repo, with two non-working files:

./solo/v000/077768_short_example.txt
./TWR-2050/v000/015490_1208_short_example.dat
./TR-1060/notworking/020173TIS1101.dat
./TR-1060/notworking/020172_20130624_0130_ruskin17.txt
./XR420/v000/TR205_CTD_22Dec10-18May11.txt
./TDR-2050/v000/016252_1208_short_example.dat
./TDR-2050/v000/016243_20120111_0512_ruskin15.txt
./TDR-2050/v000/016257FTB1101.txt
./XR620/v000/Rot_ctd_26Aug11.raw.txt

ATM, I can't remember why the TR-1060 files are marked as not working, but I think they are quite old/deprecated files.

At a minimum, I would like to have two files for each instrument number, with at least different variables/metadata in each.

Hence, we need:

• another RBRsolo with different metadata.
• same for TWR-2050
• same for XR420
• same for XR620
• two different, working TR-1060 files.

@sspagnol, @petejan - any chance you got any files to share !?