[helm] Storage: Read support for Azure Object Storage (#7162)
[helm] Storage: Read support for Azure Object Storage (#7162)

**What this PR does / why we need it**:
Using Azure Object Storage worked before Helm chart version 3.0.

**Which issue(s) this PR fixes**:
Fixes #7090
grafana/loki,grafana/loki,grafana/loki,grafana/loki,grafana/loki,grafana/loki