fix: enroll failed on docker with diffent user process

[luohoufu]

What does this PR do

This pull request includes several changes to improve the handling of process discovery and address resolution in Kubernetes environments, as well as some minor import adjustments.

Improvements to process discovery and address resolution:

• lib/process/discover.go: Introduced a new function handleK8sProcess to handle processes with PID 1 in Kubernetes environments, and updated DiscoverESProcessors to use this function. Additionally, added functionality to read listening addresses from /proc/net/tcp and /proc/net/tcp6 files on Linux if no addresses are found initially. [1] [2] [3]

Import adjustments:

• generated_metrics_tasks.go: Added import for util2 package and updated the endpoint format string to use util2.LocalAddress instead of hardcoding 127.0.0.1. [1] [2]
• lib/process/discover.go: Added imports for log, global, filepath, runtime, and strings packages.
• lib/reader/common/datetime.go: Fixed a typo in the import path by renaming commom to common.

Rationale for this change

Standards checklist

• The PR title is descriptive
• The commit messages are semantic
• Necessary tests are added
• Updated the release notes
• Necessary documents have been added if this is a new feature
• Performance tests checked, no obvious performance degradation