[yaml] Adding Spanner IO Providers for Beam YAML

[reeba212]

1. Added SpannerReadSchemaTransformProvider.java, a provider for reading from spanner.
2. Modified SpannerWriteSchemaTransformProvider.java to incorporate error handling and fixed other issues.
3. Modified MutationUtils.java to add a function "createRowFromMutation" which creates a Beam Row from a Mutation. This is used in the spanner write provider.
4. Modified ErrorHandling.java to make it serializable.
5. Modified standard_io.yaml to register the Spanner IO providers.

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[Polber]

R: @damccorm

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[Polber]

@reeba212 #32008 was merged, so you should be able to rebase on main and make sure checks pass!

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 0% with 48 lines in your changes missing coverage. Please review.

Project coverage is 57.15%. Comparing base (64b4aa6) to head (8f9178e). Report is 7 commits behind head on master.

Files with missing lines	Patch %	Lines
sdks/python/apache_beam/io/gcp/spanner_wrapper.py	0.00%	34 Missing :warning:
sdks/python/apache_beam/yaml/integration_tests.py	0.00%	14 Missing :warning:

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #31987      +/-   ##
============================================
- Coverage     57.34%   57.15%   -0.19%     
  Complexity     1474     1474              
============================================
  Files           964      965       +1     
  Lines        153341   153435      +94     
  Branches       1076     1076              
============================================
- Hits          87933    87699     -234     
- Misses        63204    63537     +333     
+ Partials       2204     2199       -5     

Flag	Coverage Δ
python	81.15% <0.00%> (-0.45%)	:arrow_down:

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[chamikaramj]

Seems like the google-cloud-spanner version specified here conflicts with the version installed in the containers.

https://github.com/apache/beam/blob/master/sdks/python/setup.py#L444 https://github.com/apache/beam/blob/master/sdks/python/container/py38/base_image_requirements.txt#L72

At least one test suite is failing due to this. https://ge.apache.org/s/2eh6tfikgiwb2/console-log/task/:sdks:python:expansion-service-container:docker?anchor=258&page=1

cc: @tvalentyn

[liferoad]

cc @Polber

[Polber]

@damccorm was working on rebuilding those - not sure the status

[Polber]

Looks like it is under review still: #32411

[damccorm]

Yep, was just waiting on approval - just merged and it should be back to green