Force controller-gen v0.16.2 for all controller (#550)

Looks like controller builds will start failing once we move to controller-runtime v0.19.0
Just trying to stay ahead of the dependencies here

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Author: a-hilaly

scripts/lib/common.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-export CONTROLLER_TOOLS_VERSION="v0.14.0"
+export CONTROLLER_TOOLS_VERSION="v0.16.2"
 export HELM_VERSION="v3.7"
 
 # setting the -x option if debugging is true