feat: Add runner logfiles to output

[sanketrathi]

This PR adds logfile information for runners to the module output

With this PR, we add propagate runners.logfiles out through the module
output. This would potentially enable module users to create CloudWatch
queries / metric filters (eg: runner startup time)

[npalm]

Thanks for your contribution. Please can yo shortly describe the need for the output, would like to understand the problem you solving. In general ok, one small remark.