feat: support session token parameter for AmazonS3

[GCHQDeveloper028]

Which issue does this PR close?

Closes #1133

Rationale for this change

This is a small change to allow passing a session token through to the object store. There is discussion in the issue (and elsewhere) on switching to a different library, doing so would superseded this change. This change will make using temporary credentials much neater/easier until that change is made however.

What changes are included in this PR?

Add optional parameter to AmazonS3 to pass a session_token through to the builder

Are there any user-facing changes?

new optional parameter to the AmazonS3 object store session_token that passes through to the AmazonS3Builder

[timsaucer]

Since we don't currently have a way to test this in our CI, have you been able to test this change against files stored in S3?

[GCHQDeveloper028]

Since we don't currently have a way to test this in our CI, have you been able to test this change against files stored in S3?

Sorry, yes I have tested this with a script roughly like:

object_store = AmazonS3(
  "example-bucket",
  access_key_id="xxx",
  secret_access_key="yyy",
  session_token="zzz"
)

ctx = SessionContext()
ctx.register_object_store("s3://",  object_store)
ctx.read_csv("s3://example-bucket/test.csv").show()

which worked as expected (and failed without session_token being set).

[timsaucer]

Great, thanks. There's no reason CI should have an issue. I'll merge this after it finishes.

[timsaucer]

Thank you @GCHQDeveloper028

[cfis]

Thanks!