fix: sql for missing columns and mysql based dialects (amundsen#550)

[pPanda-beta]

This solves amundsen-io/amundsen#550

Summary of Changes

1. Added missing column "database" since HiveWatermark is not used anymore
2. Put both "database" and "schema" column names under blockquotes, as those are reserved keywords

Tests

Example code, no tests. Manually verify by running with docker-compose.

Documentation

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[codecov-commenter]

Codecov Report

Merging #305 into master will decrease coverage by 0.40%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #305      +/-   ##
==========================================
- Coverage   74.30%   73.90%   -0.41%     
==========================================
  Files         105      105              
  Lines        4492     4492              
  Branches      419      419              
==========================================
- Hits         3338     3320      -18     
- Misses       1049     1058       +9     
- Partials      105      114       +9     

Impacted Files	Coverage Δ
...ilder/transformer/regex_str_replace_transformer.py	89.28% <0.00%> (-7.15%)	⬇️
databuilder/loader/file_system_neo4j_csv_loader.py	83.33% <0.00%> (-5.96%)	⬇️
...abuilder/extractor/snowflake_metadata_extractor.py	90.62% <0.00%> (-4.69%)	⬇️
...tabuilder/extractor/postgres_metadata_extractor.py	91.93% <0.00%> (-3.23%)	⬇️
databuilder/extractor/mssql_metadata_extractor.py	92.53% <0.00%> (-2.99%)	⬇️
...tor/dashboard/redash/redash_dashboard_extractor.py	91.50% <0.00%> (-0.95%)	⬇️
databuilder/publisher/neo4j_csv_publisher.py	83.49% <0.00%> (-0.95%)	⬇️
databuilder/task/neo4j_staleness_removal_task.py	84.16% <0.00%> (-0.84%)	⬇️

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