modifying the import function of processor_factory. Also modifying the en suit test json config to more fully specify the package name of the timepoint processor

This is necessary, because a column named Origin has been added to the survey processing.

making survey tests use the same structure as others, with separated test suits for full and partial tests

This is required for the standard epi model output, which has units of
ha_infected per ha_cell, because the model risk thresholds are fitted
for units of ha_infected per ha_wheat.

changing the scp logic and the ssh file checking logic to use a different command if no server name is set