PostgreSQL 17 Support and SSL Handling Improvements

[princeparmar]

Summary

This PR includes two major enhancements:

1. PostgreSQL 17 Support: Added comprehensive checks for PostgreSQL 17 across all categories
2. SSL Handling Improvements: Enhanced SSL handling for PostgreSQL with ping check flags and execution structure changes

Changes Made

PostgreSQL 17 Support (Commit: 87a6f0f)

• postgres/check.go: Added new checks for PostgreSQL 17 across multiple categories
• postgres/installation/installation.go: Added systemd service verification for PostgreSQL 17

SSL Handling and Structure Improvements (Commit: 830c261)

• Configuration: Updated config handling for SSL and ping check flags
• Database Connections: Enhanced PostgreSQL and MySQL connection handling
• Log Parser: Improved log parsing with better SSL handling
• Templates: Updated HTML report templates
• Integration Tests: Enhanced test case structure

Key Features

PostgreSQL 17 Support

• Introduced new checks for PostgreSQL 17 across various categories including installation, permissions, authentication, connection, settings, replication, and special checks
• Added systemd service verification for PostgreSQL 17
• Updated existing maps to include checks specific to version 17

SSL and Connection Improvements

• Enhanced SSL handling for PostgreSQL connections
• Added ping check flag functionality
• Improved execution structure for better performance
• Updated configuration management
• Enhanced log parsing capabilities

Files Modified

PostgreSQL 17 Support:

• postgres/check.go
• postgres/installation/installation.go

SSL and Structure Improvements:

• .gitignore
• README.md
• cmd/ciscollector/logparserrunner.go
• docker_testing/integrationtest/testcase.go
• htmlreport/logparser_helper.go
• htmlreport/template/logparser.tmpl
• kshieldconfig_example.toml
• pkg/config/config.go
• pkg/logparser/hba_unused_lines.go
• pkg/logparser/inactive_users.go
• pkg/logparser/init.go
• pkg/logparser/unique_ips.go
• pkg/mysqldb/connect.go
• pkg/parselog/parse.go
• pkg/postgresdb/connect.go
• pkg/runner/fastrunner.go
• postgres/sslaudit/audit.go
• postgresconfig/compareconfig.go

Testing

• Verified existing functionality remains intact
• Tested new PostgreSQL 17 checks
• Validated SSL handling improvements
• Tested ping check functionality
• Validated systemd service verification

Related Issues

Closes #10
Closes #15
Closes #16

Checklist

• Code follows project style guidelines
• Self-review completed
• No breaking changes introduced
• Configuration examples updated