Refactor SNO du profile tasks into separate roles to simplify reviewing and adjusting tasks related to the DU profile

[akrzos]

We should research the feasibility of refactoring the du profile into separate ansible roles one for with pre cluster install tasks to facilitate adding du profile manifests prior to installing a cluster and a separate role for post install du profile configuration tasks. This role could then be consumes by both the regular sno deployment and ibmcloud sno deployment.

[akrzos]

cc @Noreen21 and @jtaleric