Add job principal field for job cluster submit

[hellolittlej]

Context

• Enable access control for the job cluster
• Add new field job principal to allow user specify the principal when create the new job cluster, the principal will be used to enforce the job cluster management.

Explain context and other details for this pull request.

Backward compatibility

READ

• the jobPrincipal field will be omitted from the get request if it's absent from the data store

WRITE

• client can send the payload without jobPrincipal field

TEST

local test with internal repo

Checklist

• ./gradlew build compiles code correctly
• Added new tests where applicable
• ./gradlew test passes all tests
• Extended README or added javadocs where applicable

[github-actions]

Test Results

153 files  +1  153 suites  +1   9m 29s ⏱️ +31s
664 tests +2  652 ✅ +1  11 💤 ±0  1 ❌ +1 
665 runs  +3  653 ✅ +2  11 💤 ±0  1 ❌ +1 

For more details on these failures, see this check.

Results for commit d0cb7f6. ± Comparison against base commit bff0aeb.

♻️ This comment has been updated with latest results.