Upgrade prometheus-thanos chart to use thanos 0.4.0

[kovszilard]

Is this a request for help?:
No

Is this a BUG REPORT or FEATURE REQUEST? (choose one):

Version of Helm and Kubernetes:

Which chart in which version:
prometheus-thanos

What happened:

What you expected to happen:

How to reproduce it (as minimally and precisely as possible):

Anything else we need to know:

Thanos Compactor v0.4.0 has changed the flag --sync-delay to --consistency-delay. Since --sync-delay is hardcoded in the templates, changing the image.tag is not enough to upgrade Thanos Compactor

Code change