Description of problem:

When using the syspurpose command-line utility, It allows setting any arbitrary values for the role\sla\usage.


Version-Release number of selected component (if applicable):
RHEL 8

How reproducible:
Always

Steps to Reproduce:

1. Create an RHEL 8 VM and register with Satellite 6.

2. Execute following commands.
# syspurpose set-sla blah
# syspurpose set-role anything
# syspurpose set-usage test

3. Check back the output of "syspurpose show".

4. Check the host from Satellite GUI --> Hosts --> Content Hosts.


Actual results:

1. We will be able to see that everything that give as an input will be accepted as a valid value.

# syspurpose set-sla blah
service_level_agreement set to "blah".

# syspurpose set-usage test
usage set to "test".

# syspurpose set-role anything
role set to "anything".

# syspurpose show
{
  "role": "anything",
  "service_level_agreement": "blah",
  "usage": "test"
}


2. From Satellite UI, if we navigate to the content host and see the "System Purpose" section, we will be able to see above values set and with the status as "Mismatched.



Expected results:

1. syspurose should not allow setting any arbitrary values from the command line.

2. syspurpose should have the hardcoded values for roles\usage\sla and those values should be available by the user to see by using --help.

3. If anyone is trying to set any wrong values, it should throw some kind of error message and then ask user to check --help to get the list of possible valid inputs which can be shared.


Additional info:

I am sure it's not RHEL or Satellite specific, but the syspurpose itself allows to set any arbitrary value which is not helpful.