Add configuration for parsing Wehe data

[stephen-soltesz]

This change adds the scamper1 and annotation datatypes to the daily parsing job for Wehe.

Note: I needed to create the datasets manually, and updated m-lab/etl/cmd/update-schema to reference wehe rather than ndt. Ultimately, the update-schema command should be moved to the etl-gardener repo and it's functionality replaced. Similar steps will be necessary in mlab-staging and mlab-oti, performed by the m-lab/etl repo deployment.

./update-schema -project mlab-sandbox -experiment wehe -datatype scamper1
./update-schema -project mlab-sandbox -experiment wehe -datatype annotation2
./update-schema -project mlab-sandbox -experiment wehe -datatype hopannotation2

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This change is 

[coveralls]

Pull Request Test Coverage Report for Build 3637

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 78.442%

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Totals
Change from base Build 3628:	0.0%
Covered Lines:	1259
Relevant Lines:	1605

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💛 - Coveralls

[stephen-soltesz]

Part of:

• https://github.com/m-lab/etl/issues/1114