finch: update to version 0.7.1

See Finch release PR bird-house/finch#164 for
more release info.

This update will fix the following Jenkins error introduced by
bird-house/finch#161 (comment):

```
12:37:00  _________ finch-master/docs/source/notebooks/finch-usage.ipynb::Cell 1 _________
12:37:00  Notebook cell execution failed
12:37:00  Cell 1: Cell outputs differ
12:37:00
12:37:00  Input:
12:37:00  help(wps.frost_days)
12:37:00
12:37:00  Traceback:
12:37:00   mismatch 'stdout'
12:37:00
12:37:00   assert reference_output == test_output failed:
12:37:00
12:37:00    'Help on meth...ut files.\n\n' == 'Help on meth...ut files.\n\n'
12:37:00    Skipping 70 identical leading characters in diff, use -v to show
12:37:00    - min=None, missing_options=None, check_missing='any', thresh='0 degC', freq='YS', variable=None, output_formats=None) method of birdy.client.base.WPSClient instance
12:37:00    + min=None, check_missing='any', cf_compliance='warn', data_validation='raise', thresh='0 degC', freq='YS', missing_options=None, variable=None, output_formats=None) method of birdy.client.base.WPSClient instance
12:37:00          Number of days where daily minimum temperatures are below 0.
12:37:00
12:37:00          Parameters
12:37:00          ----------
12:37:00          tasmin : ComplexData:mimetype:`application/x-netcdf`, :mimetype:`application/x-ogc-dods`
12:37:00              NetCDF Files or archive (tar/zip) containing netCDF files.
12:37:00          thresh : string
12:37:00              Freezing temperature.
12:37:00          freq : {'YS', 'MS', 'QS-DEC', 'AS-JUL'}string
12:37:00              Resampling frequency.
12:37:00          check_missing : {'any', 'wmo', 'pct', 'at_least_n', 'skip', 'from_context'}string
12:37:00              Method used to determine which aggregations should be considered missing.
12:37:00          missing_options : ComplexData:mimetype:`application/json`
12:37:00              JSON representation of dictionary of missing method parameters.
12:37:00    +     cf_compliance : {'log', 'warn', 'raise'}string
12:37:00    +         Whether to log, warn or raise when inputs have non-CF-compliant attributes.
12:37:00    +     data_validation : {'log', 'warn', 'raise'}string
12:37:00    +         Whether to log, warn or raise when inputs fail data validation checks.
12:37:00          variable : string
12:37:00              Name of the variable in the NetCDF file.
12:37:00
12:37:00          Returns
12:37:00          -------
12:37:00          output_netcdf : ComplexData:mimetype:`application/x-netcdf`
12:37:00              The indicator values computed on the original input grid.
12:37:00          output_log : ComplexData:mimetype:`text/plain`
12:37:00              Collected logs during process run.
12:37:00          ref : ComplexData:mimetype:`application/metalink+xml; version=4.0`
12:37:00              Metalink file storing all references to output files.
```

birdhouse/default.env

@@ -4,7 +4,7 @@
 # Jupyter single-user server images, can be overriden in env.local to have a space separated list of multiple images
 export DOCKER_NOTEBOOK_IMAGES="pavics/workflow-tests:210216"
 
-export FINCH_IMAGE="birdhouse/finch:version-0.7.0"
+export FINCH_IMAGE="birdhouse/finch:version-0.7.1"
 
 export THREDDS_IMAGE="unidata/thredds-docker:4.6.15"