fix: No longer collect executable files

[daffinito]

Issue

IHEDIAG-649
Infra log collection can collect .exe files

Goals

Ensure no executable files are being collected

Implementation Details

I updated the regex that is used in the Infra/Log/Collect task to be more specific. If the infra config has a log path that ends with newrelic-infra.log, the regex would be

• OLD: ^newrelic-infra*
• NEW: ^newrelic-infra.*(.gz|.zip|.log)

I updated the FileCopyEnvelope struct with a function to check if a file is executable. For windows it just checks if the suffix is .exe. For Linux/Mac, it checks the file permissions as described in this stack overflow.

I updated the paths we search for config files to include the paths for Infra on Mac installed via brew. Taken from this doc.

How to Test

go test ./...

I smoke tested by:

• Running the Infra suite and confirming it collected the newrelic-infra.log
• Moving the newrelic-infra.log and replacing it with an executable file
• Running the infra suite again, and confirming that Skipping executable file: is in the debug logging and that the log file is not in the zip

[cade-conklin]