span id to hex

[ie-pham]

What this PR does: stop removing leading zeroes in span ids

Which issue(s) this PR fixes:
Fixes #2060

Checklist

• Tests updated
• Documentation added
• CHANGELOG.md updated - the order of entries should be [CHANGE], [FEATURE], [ENHANCEMENT], [BUGFIX]

[joe-elliott]

This looks good. One last thing! Add a changelog entry then we'll merge and backport to 2.0.1

[ie-pham]

@joe-elliott One last question, extra logic would have to be added to this I believe but what happens if the span id has leading zeroes and it is longer than 16 characters? Still no trimming?

[joe-elliott]

@joe-elliott One last question, extra logic would have to be added to this I believe but what happens if the span id has leading zeroes and it is longer than 16 characters? Still no trimming?

since we're in "shouldn't happen" territory i'm fine with anything that:

• doesn't panic
• makes decent sense
• doesn't overcomplicate the code

[joe-elliott]

looks good!

[github-actions]

The backport to release-v2.0 failed:

The process '/usr/bin/git' failed with exit code 1

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new branch
git switch --create backport-2062-to-release-v2.0 origin/release-v2.0
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x 2d50f21918c81a433e62b6f9b759ca7b98ed7482
# Push it to GitHub
git push --set-upstream origin backport-2062-to-release-v2.0
git switch main
# Remove the local backport branch
git branch -D backport-2062-to-release-v2.0

Then, create a pull request where the base branch is release-v2.0 and the compare/head branch is backport-2062-to-release-v2.0.