Backport of Fix ingress into release/1.2.x

[hc-github-team-consul-core]

Backport

This PR is auto-generated from #2687 to be assessed for backporting due to the inclusion of the label backport/1.2.x.

The below text is copied from the body of the original PR.

---

• blank line between rules: and - host:
• ingressClass was present when no value was specified

Changes proposed in this PR:

Fix malformed ingress when using the helm chart.

Given this values.yaml snippet:

ui:
  enabled: true
  ingress:
    enabled: true
    hosts:
    - host: consul.localhost

Output before changes:

---
# Source: consul/templates/ui-ingress.yaml
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: vault-consul-ui
  namespace: consul
  labels:
    app: consul
    chart: consul-helm
    heritage: Helm
    release: vault
    component: ui
spec:
  ingressClassName: 
  rules:
  
  - host: "consul.localhost"
    http:
      paths:
      - backend:
          service:
            name: vault-consul-ui
            port:
              number: 80
        path: /
        pathType: Prefix

Output after changes:

---
# Source: consul/templates/ui-ingress.yaml
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: consul-consul-ui
  namespace: consul
  labels:
    app: consul
    chart: consul-helm
    heritage: Helm
    release: consul
    component: ui
spec:
  rules:
  - host: "consul.localhost"
    http:
      paths:
      - backend:
          service:
            name: consul-consul-ui
            port:
              number: 80
        path: /
        pathType: Prefix

How I've tested this PR:

Used bats as shown at: https://github.com/hashicorp/consul-k8s/blob/main/CONTRIBUTING.md#testing-the-helm-chart

I am seeing a failure for this file, but it would fail before any changes I've made due to the default values file not including a host:

consul-k8s/charts/consul/values.yaml

Lines 1750 to 1761 in b3769b1

	# hosts is a list of host name to create Ingress rules.
	#
	# ```yaml
	# hosts:
	# - host: foo.bar
	# paths:
	# - /example
	# - /test
	# ```
	#
	# @type: array<map>
	hosts: []

bats consul/test/unit/ui-ingress.bats
ui-ingress.bats
 ✓ ui/Ingress: disabled by default
 ✓ ui/Ingress: enable with ui.ingress.enabled
 ✓ ui/Ingress: disable with ui.ingress.enabled
 ✓ ui/Ingress: disable with ui.ingress.enabled dash string
 ✗ ui/Ingress: no hosts by default
   (in test file consul/test/unit/ui-ingress.bats, line 48)
     `[ "${actual}" = "null" ]' failed
   ---
   # Source: consul/templates/ui-ingress.yaml
   apiVersion: networking.k8s.io/v1
   kind: Ingress
   metadata:
     name: release-name-consul-ui
     namespace: consul
     labels:
       app: consul
       chart: consul-helm
       heritage: Helm
       release: release-name
       component: ui
   spec:
     rules:

 ✓ ui/Ingress: hosts can be set
 ✓ ui/Ingress: exposes single port 80 when global.tls.enabled=false
 ✓ ui/Ingress: exposes single port 443 when global.tls.enabled=true and global.tls.httpsOnly=true
 ✓ ui/Ingress: exposes the port 80 when global.tls.enabled=true and global.tls.httpsOnly=false
 ✓ ui/Ingress: exposes the port 443 when global.tls.enabled=true and global.tls.httpsOnly=false
 ✓ ui/Ingress: no tls by default
 ✓ ui/Ingress: tls can be set
 ✓ ui/Ingress: tls with secret name can be set
 ✓ ui/Ingress: no annotations by default
 ✓ ui/Ingress: annotations can be set
 ✓ ui/Ingress: default PathType Prefix
 ✓ ui/Ingress: set PathType ImplementationSpecific
 ✓ ui/Ingress: no ingressClassName by default
 ✓ ui/Ingress: can set ingressClassName

19 tests, 1 failure

How I expect reviewers to test this PR:

Using the existing tests.

Checklist:

• Tests added
• CHANGELOG entry added

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Overview of commits

• 0bf7a62