bitnami kube-prometheus 8.9.0

chore(PET-574): create one ref only kube-prometheus clone
We need to install kube prometheus using flux cd. The way it does it is via git clone --mirror which fetches all objects/deltas from this MASSIVE bintami monorepo where they keep all possible helm charts.
This times out in flux cd (takes well over 15 minutes).
To avoid that we just copied the state of one folder (kube-prometheus) at our targeted version (8.9.0) of this helm chart as per this commit: bitnami/charts@e2bb914

The copying was done manually.