Pulp

Because its name was changed from "PowerTools" to "powertools"

Fortunately, "Stream-PowerTools" was just renamed to simply "powertools". Which simplifies our code for enabling it.

Note: This manifests itself as the following error, assuming the user's' installing pulp-rpm:

    TASK [pulp_rpm_prerequisites : Install requested non-pip packages] *************
    Monday 14 December 2020  19:49:53 +0000 (0:00:00.081)       0:05:27.780 *******
fatal: [centos-8]: FAILED! => {
    "changed": false, 
    "failures": [
        "No package file-devel available.", 
        "No package libmodulemd-devel available."
    ], 
    "rc": 1, 
    "results": []
}