feat: support flow_name from prefect.yaml

[jthetzel]

Add support for flow_run to specify a deployment's flow name. For background, see #280 .

Given this flow:

@flow(name="flow-foo")
def flow_foo():
    print("bar")

And this (pseudo) manifest:

apiVersion: prefect.io/v1
kind: PrefectDeployment
metadata:
 name: deployment-foo
 namespace: prefect
spec:
 deployment:
   flow_name: flow-run
   entrypoint: app.foo:flow_run

Before this branch, deployment is named

flow_foo/deployment-foo

With this branch, deployment is named

flow-foo/deployment-foo

[jthetzel]

Container image available here: jthetzel/prefect-operator:9fe4668
( https://hub.docker.com/repository/docker/jthetzel/prefect-operator/tags/9fe4668/sha256-6b14a41b7b6db418416ecb0a9dfdac112b3589c189b931b2abf4309e7160bf5a )

[mitchnielsen]

Thanks for this @jthetzel! One small suggestion.

[mitchnielsen]

Thanks again @jthetzel 🤝