Removed Wercker references

[agnihotrigaurav]

Wercker has been deprecated. Removing reference from same

[spinnakerbot]

The following commits need their title changed:

• 8c4208c8bf785610e907d9934f04cdf8c465b9e9: Removed Wercker references

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<type>(<scope>): <subject>, e.g. fix(kubernetes): address NPE in status check

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