bump metering version to v1.1.0

[mate4st]

What this PR does / why we need it:

Metering upgrade with removal of 3 fields:

Cluster reports:

• Removal of total-used-cpu-seconds, use average-used-cpu-millicores instead
• Removal of average-available-cpu-cores, use average-available-cpu-millicores instead

Namespace reports:

• Removal of total-used-cpu-seconds, use average-used-cpu-millicores instead

Which issue(s) this PR fixes:

Fixes #

What type of PR is this?

/kind chore
Special notes for your reviewer:

Does this PR introduce a user-facing change? Then add your Release Note here:

Upgrade metering to v1.1.0. Following fields are removed:
  Cluster reports:
  * Removal of `total-used-cpu-seconds`, use `average-used-cpu-millicores` instead
  * Removal of `average-available-cpu-cores`, use `average-available-cpu-millicores` instead
  Namespace reports:
  * Removal of `total-used-cpu-seconds`, use `average-used-cpu-millicores` instead

Documentation:

https://github.com/kubermatic/docs/pull/1239/

[xrstf]

/approve
/lgtm

[kubermatic-bot]

LGTM label has been added.

Git tree hash: a640c042f4348f330995c4cd43ca18adc1f3d529

[kubermatic-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: WeirdMachine, xrstf

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