Description of problem:

When provisioning using image and cloud-init, the userdata definition is too big (> 2K). We either need to reduce the userdata size, or use UserDataSecretRef to pass large definitions.

How reproducible:

Always

Is this issue a regression from an earlier version:

Steps to Reproduce:

1. Define an OCP-V compute resource
2. Define an image under the OCP-V CR and the OS of your choosing with userdata flag set.
3. Create a host under OCP-V, select image based provisioning
4. Save the host

Actual behavior:

Host is not created, and an exception is logged about userdata being too large

Expected behavior:

The host is created successfully