The agent reports docker process samples when enable_process_metrics: false

[cristianciutea]

Description

We have noticed that on new default behavior of filtered process samples, the process samples for docker are still reported.

To reproduce install an agent to monitor an environment with docker(add at least one container) and disable process metrics:
enable_process_metrics: false

[josemore]

Note you should still be able to disable process samples when running on docker using the metrics_process_sample_rate: -1 setting in the infra-agent.

[josemore]

We also noticed that the "include_matching_metrics" setting was not being applied against docker processes when running the containerized agent.
The linked fix aims to solve both scenarios: enable_process_metrics and include_matching_metrics.