Release helm chart for v0.9.0

[dgrisonnet]

#1739

[younsl]

@dgrisonnet Could you share a rough timeline for the 0.9.0 chart release?

[dgrisonnet]

I can't, it depends on @stevehipwell availability to look into this

[younsl]

Got it, thanks for the update. I'll wait for @stevehipwell then.

[stevehipwell]

I've got the following PRs I'd like to get into the release.

• feat(helm): Add location to set hostUsers #1751
• Fix: Use metric server full name instead of name for clusterrole in helm chart #1801
• feat(helm) add namespaceOverride #1711
• helm: make cert-manager existingIssuer group configurable #1844

[stevehipwell]

I've opened #1846 to release the chart as it looks like #1844 is going to delay this too much.

@dgrisonnet it'd be worth getting #1843 merged before this too.