PG Integration tests and linter local dev improvements

[ne2pit]

PG Integration tests improvements:

• Add compiled binary to .dockerignore. Content of the binary is different always because of timestamp imprint. This fixes docker build cache.
• Fixed typo in pg_remote_backup_without_files_metadata_test. Add to CI.
• Improved cleanup. Stop docker compose after test run. Delete more docker artefacts on make pg_clean.
• Removed one more redundant container image. All tests can be run in image build from Dockerfile_prefix. Continue optimisation from [PG] Optimize docker-compose & dockerfiles for postgresql docker tests #1510.
• Tests pg_pgbackrest_backup_fetch_test and pg_ssh_backup_test are excluded from running in one container because of special requirements. Makefile runs them in another docker-compose calls.
• Add cleanup of PGDATA_ALPHA and PGDATA_BETA for a couple of tests.
• Decreased time of pgbench working in pg_pgbackrest_backup_fetch_test from 1000 to 60 seconds. I don't know much about test logic. But anyway running a data creation in test for 16 minutes looks overkill.

After improvements all tests successfully runs on notebook. It took 30 minutes with Colima as a Docker runtime. Configuration is 2 CPU / 8 GB Memory.

make pg_integration_test  8.46s user 8.79s system 0% cpu 30:00.78 total

Linter improvements:

• Added notice about golangci-lint is not recommended to build from source.
• Fixed version of golangci-lint container. Now it is matched with GH Actions version.
• Added cache docker volume. Second run is less than minute against 6-7 minutes without cache.

[ne2pit]

Moving golangci-lint setting modules-download-mode: vendor to correct place brake linter on CI. There is no vendor in repo actually. Change setting value to readonly as recommended for CI.