add "webhook.hostNetwork" to helm chart

[shaunc]

Is your feature request related to a problem? Please describe.
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https://cert-manager.io/next-docs/installation/compatibility/#aws-eks suggests using webhook with hostNetwork when using overlay network rather than AWS CNI. However, that is not available as an option for the helm chart.

Describe the solution you'd like
A clear and concise description of what you want to happen.

Add webhook.hostNetwork to helm chart options.

Describe alternatives you've considered
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manually edit webhook after deploy :(

Additional context
Add any other context about the feature request here.

Environment details (if applicable):

• Kubernetes version (e.g. v1.10.2): v1.16
• Cloud-provider/provisioner (e.g. GKE, kops AWS, etc): EKS / weave-net CNI
• cert-manager version (e.g. v0.4.0): 0.15.2
• Install method (e.g. helm or static manifests): helm

/kind feature

[meyskens]

You're looking at the documentation of release-next which is the documentation for our next release.
This feature got added in #3113 and will be released in v1.0

/close

[jetstack-bot]

@meyskens: Closing this issue.

In response to this:

You're looking at the documentation of release-next which is the documentation for our next release.
This feature got added in #3113 and will be released in v1.0

/close

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[shaunc]

Thanks!

[tomi-bigpi]

In case anyone needs to get this applied before the 1.0 release, a command similar the following should do it:
kubectl patch deployment -n cert-manager cert-manager-webhook -p '{"spec":{"template":{"spec": {"hostNetwork":true}}}}'

We needed that for EKS controller to be able to connect to the webhook. Running that before trying to create the Issuers was required.