bugfix: postgresql exporter delete task

[tzaffi]

Summary

The delete task wasn't running because the exporter config is wasn't actually being set in the exporter struct.

This PR includes:

• The bugfix in conduit/plugins/exporters/postgresql/postgresql_exporter.go and conduit/plugins/exporters/postgresql/util/prune.go
• End-to-end test enhancement to verify the fix (pyproject.toml and *.py). This required providing the capability to query the indexer database.
• Changing the CLI descriptions for the conduit init command to be more in line with the other such descriptions (pkg/cli/internal/initialize/init.go)
• Miscellaneous lint errors that I was experiencing locally, but that don't seem to be happening in CI.
• Fixing TestMetrics in conduit/pipeline/pipeline_test.go which started failing mysteriously.

TODO

• [x] Close #121 deleting its branch
• [ ] Shouldn't the debug statements added actually be traces?

Issues

117

Test Plan

A new E2E test is introduced to ensure that the delete task works as expected. I tried running this new test against the original code, and it failed in the expected manner.

See: #121

[codecov[bot]]

Codecov Report

Merging #119 (af2eb5a) into master (442791a) will increase coverage by 2.69%. The diff coverage is 76.61%.

@@            Coverage Diff             @@
##           master     #119      +/-   ##
==========================================
+ Coverage   67.66%   70.36%   +2.69%     
==========================================
  Files          32       36       +4     
  Lines        1976     2500     +524     
==========================================
+ Hits         1337     1759     +422     
- Misses        570      646      +76     
- Partials       69       95      +26     

Impacted Files	Coverage Δ
conduit/data/block_export_data.go	100.00% <ø> (+92.30%)	:arrow_up:
conduit/metrics/metrics.go	100.00% <ø> (ø)
conduit/pipeline/metadata.go	69.11% <ø> (ø)
conduit/plugins/config.go	100.00% <ø> (ø)
...duit/plugins/exporters/filewriter/file_exporter.go	81.63% <ø> (-1.06%)	:arrow_down:
conduit/plugins/importers/algod/metrics.go	100.00% <ø> (ø)
...gins/processors/filterprocessor/fields/searcher.go	77.50% <ø> (ø)
...ins/processors/filterprocessor/filter_processor.go	83.82% <ø> (+3.54%)	:arrow_up:
...plugins/processors/filterprocessor/gen/generate.go	34.28% <ø> (ø)
conduit/plugins/processors/noop/noop_processor.go	64.70% <ø> (+6.81%)	:arrow_up:
... and 17 more

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