Support array result include sequence action

[ningyougang]

Depend on below prs:

• Support array result for common action and sequence action openwhisk#5290 (merged)

• Support array result include sequence action openwhisk-runtime-go#170 (merged)

• Support array result

  • make python runtime to support array result for common action
  • make python runtime to support array result for sequence action (support array as input param)

[ningyougang]

Python supports sequence action by default with support array result, test steps as below

• Write split.py and sort.py

[root@nccddev130026 ~]# cat ~/split.py 
def main(args):
    payload = args.get("payload", "aaaa\nbbbb\nccccc")
    separator = args.get("separator", "\n")
    result = payload.split(separator)
    return result

[root@nccddev130026 ~]# cat ~/sort.py 
def main(args):
    if args is None:
        args = ["data1", "data2", "data3"]
    result = args[::-1]
    return result

• Create action and invoke it (python:3.7/3.9 both tested, worked well both)

wsk -i action create /whisk.system/utils/split-python --kind python:3.7 ~/split.py
wsk -i action create /whisk.system/utils/sort-python --kind python:3.7 ~/sort.py
wsk -i action create mySequence-python --sequence /whisk.system/utils/split-python,/whisk.system/utils/sort-python
wsk -i action invoke --result mySequence-python --param payload "dddd\nbbbb\ncccc\nfffffff\nggggggggg" -r -v

[dgrove-oss]

LGTM