Removed data_size from view info assertion

[ricellis]

The data_size field is no longer present in CouchDB 3.x so remove it from the assertion for compatibility.

Checklist

• [x] Tick to sign-off your agreement to the Developer Certificate of Origin (DCO) 1.1
• [x] Added tests for code changes or test/build only changes
• [x] Updated the change log file (CHANGES.md|CHANGELOG.md) or test/build only changes
• [x] Completed the PR template below:

Description

Removed data_size from view info assertion

1. Steps to reproduce and the simplest code sample possible to demonstrate the issue

• Run tests.unit.design_document_tests.DesignDocumentTests.test_get_info with CouchDB 3 rc1

2. What you expected to happen

Test to pass

3. What actually happened

Assertion failure:

{'vie[33 chars]se, 'waiting_clients': 0, 'waiting_commit': Fa[104 chars]001'} != {'vie[33 chars]se, 'update_seq': 0, 'waiting_clients': 0, 'wa[120 chars]001'}
  {'name': 'ddoc001',
   'view_index': {'compact_running': False,
+                 'data_size': 0,
                  'language': 'javascript',
                  'purge_seq': 0,
                  'update_seq': 0,
                  'updater_running': False,
                  'waiting_clients': 0,
                  'waiting_commit': False}}

Approach

Remove the data_size element from the view info before asserting as it is no longer present in CouchDB 3.

Schema & API Changes

• "No change"

Security and Privacy

• "No change"

Testing

• Modified existing tests to reduce assertable members of view info to be compatible with both 2.x and 3.x

Monitoring and Logging

• "No change"