Add log attribute limit configuration

[alanwest]

Fixes #2860

Adds log attribute limit configuration.

These new environment variables bring more consistency between spans and logs. Therefore, I believe it should be exempt from the moratorium on new env vars.

[github-actions]

This PR was marked stale due to lack of activity. It will be closed in 7 days.

[github-actions]

Closed as inactive. Feel free to reopen if this PR is still being worked on.

[github-actions]

Closed as inactive. Feel free to reopen if this PR is still being worked on.

[jack-berg]

I believe we reached agreement on the naming question of *_LOG_* vs. *_LOGRECORD_*.

@open-telemetry/specs-logs-approvers please take a look.

edit
Also we briefly discussed in the 12/6/22 Spec SIG and @carlosalberto and @arminru mentioned that this is probably exempt from the moratorium because it doesn't introduce any new concepts and brings the log signal in line with the the other signals.

[github-actions]

Closed as inactive. Feel free to reopen if this PR is still being worked on.

[tigrannajaryan]

This includes changes to trace sdk file. Either fix the the PR description to explain why it is in one PR with the log limits or split into 2 separate PRs if unrelated.

[tigrannajaryan]

@open-telemetry/specs-approvers please review.

[alanwest]

This includes changes to trace sdk file. Either fix the the PR description to explain why it is in one PR with the log limits or split into 2 separate PRs if unrelated.

I'm fine splitting the changes to the trace SDK into a separate PR. Though, the corresponding sections of log and trace SDK should mirror each other. I think it makes sense to make the changes in trace and log specs in parallel to eliminate the possibility of continued divergence.

Below is my thought process for each of the changes I've made to the trace SDK.

[tigrannajaryan]

Has enough approvals, 2 days passed since last change, merging.