Put Back Dekorate to Deploy the Admission Controller

Dekorate was removed from e2e tests because of incompatibility with fabric8 client 6. If that is solved, it should be used again and related commits reverted from:
https://github.com/java-operator-sdk/admission-controller-framework/pull/26

See commit and ones after: https://github.com/java-operator-sdk/admission-controller-framework/pull/26/commits/f63b0cd09f74fd93c78e989f7a83eaae5b9f3705