(fix) fix multi-docs/lists in starlark

[tphoney]

➜  drone-cli git:(starlark_multi_fix) ✗ release/linux/amd64/drone starlark --source=multi.star   --stdout=true
---
{"kind": "pipeline", "name": "build-amd64", "steps": [{"name": "build", "image": "alpine", "commands": ["echo hello world"]}]}
---
{"kind": "pipeline", "name": "build-arm64", "steps": [{"name": "build", "image": "alpine", "commands": ["echo hello world"]}]}
➜  drone-cli git:(starlark_multi_fix) ✗ release/linux/amd64/drone starlark --source=multi.star   --stdout=true  --format
---
kind: pipeline
name: build-amd64
steps:
- commands:
  - echo hello world
  image: alpine
  name: build
---
kind: pipeline
name: build-arm64
steps:
- commands:
  - echo hello world
  image: alpine
  name: build
➜  drone-cli git:(starlark_multi_fix) ✗ release/linux/amd64/drone starlark --source=bla.star   --stdout=true
---
{"kind": "pipeline", "name": "build", "steps": [{"name": "build", "image": "alpine", "commands": ["echo hello world"]}]}%
➜  drone-cli git:(starlark_multi_fix) ✗ release/linux/amd64/drone starlark --source=bla.star   --stdout=true --format
kind: pipeline
name: build
steps:
- commands:
  - echo hello world
  image: alpine
  name: build
➜  drone-cli git:(starlark_multi_fix) ✗

[mwalbeck]

Hi! Thanks for the quick response on this. I just gave it a quick test and everything works as expected. It gave the exact same output as v1.3.0. I messed up my test somewhere, but I get a valid drone.yml will all the steps!

Cheers!