Extend wait_for with optional condition blocks

[jkabonickAtOlo]

Addresses #155.

• Extends wait_for to also support waiting for status.Conditions with a condition block.
• Two acceptance tests to cover the addition

Can be used as below, with or without the existing field block.

resource "kubectl_manifest" "test" {
	wait_for {
		condition {
			type = "ContainersReady"
			status = "True"
		}
		condition {
			type = "Ready"
			status = "True"
		}
		field {
			key = "status.containerStatuses.[0].ready"
			value = "true"
		}
		field {
			key = "status.phase"
			value = "Running"
		}
		field {
			key = "status.podIP"
			value = "^(\\d+(\\.|$)){4}"
			value_type = "regex"
		}
	}
	yaml_body = <<YAML
apiVersion: v1
kind: Pod
metadata:
  name: nginx
spec:
  containers:
  - name: nginx
    image: nginx:1.14.2
    readinessProbe:
      httpGet:
        path: "/"
        port: 80			
      initialDelaySeconds: 10
YAML
}

[alekc]

Thanks for your contribution. I will review it as soon as possible 👍

[alekc]

@jkabonickAtOlo sorry it took so long. I have just one minor remark, and then it should be good to go.

[stevehipwell]

@jkabonickAtOlo you might want to fix this before it gets merged.

[jkabonickAtOlo]

@stevehipwell I might be missing something, what is the problem with the struct?

[stevehipwell]

Missing/removed EOF (shows up online but I'm not sure about mobile).

[jkabonickAtOlo]

I will take care of that. Thank you for pointing it out.

[stevehipwell]

@jkabonickAtOlo I think you're missing the README updates for this new functionality?