Add support for filesystem locks and their metrics

[johnleslie]

Fixes #3611

Changes

• create registry.file.lock representing file locks and lock operations.
• create metric.system.filesystem.locks.count reprsenting counts of these locks/operations

Merge requirement checklist

• CONTRIBUTING.md guidelines followed.
• Change log entry added, according to the guidelines in When to add a changelog entry.
  • If your PR does not need a change log, start the PR title with [chore]
• [N/A] Links to the prototypes or existing instrumentations (when adding or changing conventions)

Note

make generate-all && make markdown-toc are generating registry.file.lock docs in docs/registry/attributes/file.md but not making any changes for metric.system.filesystem.locks.count in model/system/metrics.yaml.

[braydonk]

Left a couple small comments re: pluralization (we usually try to make namespaces not plural kind of like units)

To get the changes generated in the docs/system/system-metrics.md add the following within the ## Filesystem metrics section (assuming the namespace rename is accepted):

### Metric: `system.filesystem.lock.count`

<!-- semconv metric.system.filesystem.lock.count -->
<!-- prettier-ignore-start -->

<!-- prettier-ignore-end -->
<!-- endsemconv -->

Re-running make generate-all should have the new info show up after that.

[johnleslie]

Left a couple small comments re: pluralization (we usually try to make namespaces not plural kind of like units)

To get the changes generated in the docs/system/system-metrics.md add the following within the ## Filesystem metrics section (assuming the namespace rename is accepted):

### Metric: `system.filesystem.lock.count`

<!-- semconv metric.system.filesystem.lock.count -->
<!-- prettier-ignore-start -->

<!-- prettier-ignore-end -->
<!-- endsemconv -->

Re-running make generate-all should have the new info show up after that.

Done

[braydonk]

LGTM, looks like it needs a make generate-all

[johnleslie]

LGTM, looks like it needs a make generate-all

Done