Merge branch '67-set-metrics-retention-to-forever' into 'master'

Resolve "Set Metrics retention to forever"

Closes big-bang/product/packages/thanos#67

See merge request !4761

chart/templates/thanos/values.yaml

@@ -57,12 +57,6 @@ monitoring:
 storegateway:
   enabled: true
 
-compactor:
-  enabled: true
-  retentionResolutionRaw: 30d
-  retentionResolution5m: 30d
-  retentionResolution1h: 10y
-
 query:
   dnsDiscovery:
     # to allow lookups to work with and without Istio enabled, we disable k8s dns service
@@ -105,9 +99,6 @@ storegateway:
 
 compactor:
   enabled: true
-  retentionResolutionRaw: 30d
-  retentionResolution5m: 30d
-  retentionResolution1h: 30d
 
 query:
   extraFlags: