Expose runtime attributes in AnnotateVcf

[epiercehoffman]

Updates

Expose runtime attributes in AnnotateVcf.wdl and subworkflows. Requested by an internal user who ran out of memory in AnnotateVcf.AnnotateExternalAF.split_query_vcf and was not able to increase the memory in Terra.

Testing

• Validated AnnotateVcf.wdl with womtool.
• Did not run a test because we lack test data for AnnotateVcf.wdl in the repo, but I have another PR coming soon that will hopefully address that, and the user can also test the fix and report back.

[mwalker174]

LGTM. I don't see any areas where there would be errors at runtime, so validating with womtool should be fine here.