Support labels for semantic_models, dimensions, measures and entities

[emmyoop]

resolves #8595

Problem

While label is required for Metric nodes, it is not currently supported for SemanticModel nodes, Dimensions, Entities and Measures.

Solution

Add support for an optional label field.

Checklist

• I have read the contributing guide and understand what's expected of me
• I have run this code in development and it appears to resolve the stated issue
• This PR includes tests, or tests are not required/relevant for this PR
• This PR has no interface changes (e.g. macros, cli, logs, json artifacts, config files, adapter interface, etc) or this PR has already received feedback and approval from Product or DX

[github-actions]

Thank you for your pull request! We could not find a changelog entry for this change. For details on how to document a change, see the contributing guide.

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.05% 🎉

Comparison is base (8aaed0e) 86.56% compared to head (cb715d3) 86.61%.
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8646      +/-   ##
==========================================
+ Coverage   86.56%   86.61%   +0.05%     
==========================================
  Files         175      175              
  Lines       25595    25604       +9     
==========================================
+ Hits        22156    22177      +21     
+ Misses       3439     3427      -12     

Flag	Coverage Δ
integration	83.46% <100.00%> (+0.11%)	⬆️
unit	65.13% <100.00%> (+0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
core/dbt/parser/schema_yaml_readers.py	91.91% <ø> (ø)
core/dbt/contracts/graph/nodes.py	96.13% <100.00%> (+<0.01%)	⬆️
core/dbt/contracts/graph/semantic_models.py	98.85% <100.00%> (+0.04%)	⬆️
core/dbt/contracts/graph/unparsed.py	93.48% <100.00%> (+0.05%)	⬆️

... and 3 files with indirect coverage changes

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[QMalcolm]

This looks great!

For anyone wondering, we can't test against the protocol yet for labels because dbt-semantic-interfaces hasn't released a version with them yet 🙃

[FishtownBuildBot]

Opened a new issue in dbt-labs/docs.getdbt.com: dbt-labs/docs.getdbt.com#4114

[github-actions]

The backport to 1.6.latest 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 working tree
git worktree add .worktrees/backport-1.6.latest 1.6.latest
# Navigate to the new working tree
cd .worktrees/backport-1.6.latest
# Create a new branch
git switch --create backport-8646-to-1.6.latest
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 e3dfb09b10f3027dde473af3352c36f0e16e92a8
# Push it to GitHub
git push --set-upstream origin backport-8646-to-1.6.latest
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-1.6.latest

Then, create a pull request where the base branch is 1.6.latest and the compare/head branch is backport-8646-to-1.6.latest.