This will install the prometheus-adapter stable
helm chart. Requires monitoring_enabled=true.
The chart version can be configured using
prometheus_adapter_chart_tag and an option is
available to overwrite the default configuration
rules for a user defined ConfigMap referenced
by using prometheus_adapter_configmap label.
story: 2006765
task: 37278
Change-Id: I5b86f4455f88c8dbeac6e56942e1ca55f1d1726c
Signed-off-by: Diogo Guerra <diogo.filipe.tomas.guerra@cern.ch>