Do not wrap certificate during base64

[dims]

Issue #, if available:

Description of changes:

Avoid wrapping as it leads to the following error when running make admission-webhook

                kubectl apply -f -
Error from server (BadRequest): error when creating "STDIN": ValidatingWebhookConfiguration in version "v1" cannot be handled as a ValidatingWebhookConfiguration: illegal base64 data at input byte 76
make: *** [admission-webhook] Error 1

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[micahhausler]

LGTM, thank you!