node: add default renter upload ready method and expanded test

5 jobs for 3509-upload-ready-api-endpoint in 58 minutes and 17 seconds (queued for 14 minutes and 12 seconds)
Status Job ID Name Coverage
  Lint
passed #214657210
lint

00:04:30

 
  Test
passed #214731589
integration-tests

00:33:23

75.0%
passed #214657211
legacy-tests

00:08:17

45.9%
passed #214657212
package-tests

00:20:22

87.0%
failed #214657213
integration-tests

00:27:38

75.0%