feat: add support for configuring node attributes

[tomjelinek]

Enhancement:
Add support for configuring node attributes

Reason:
Node attributes are used in resource constraints

Result:
It is now possible to configure node attributes using the role

Issue Tracker Tickets (Jira or BZ if any):

• https://issues.redhat.com/browse/RHEL-22106
• https://issues.redhat.com/browse/RHEL-22108
• resolves: Setting cluster members' attributes. #181
• https://github.com/orgs/linux-system-roles/discussions/100

[tomjelinek]

[citest]

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (2450454) 0.00% compared to head (4d6f7b0) 76.79%.

Additional details and impacted files

@@            Coverage Diff            @@
##           main     #184       +/-   ##
=========================================
+ Coverage      0   76.79%   +76.79%     
=========================================
  Files         0        3        +3     
  Lines         0      181      +181     
  Branches      0       12       +12     
=========================================
+ Hits          0      139      +139     
- Misses        0       42       +42     

Flag	Coverage Δ
sanity	50.54% <ø> (?)

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[tomjelinek]

[citest]

[tomjelinek]

UnicodeDecodeError: 'utf-8' codec can't decode byte 0xd4 in position 34: invalid continuation byte errors in tests_cib_node_attributes.yml are caused by pacemaker bug RHEL-23498 and RHEL-23065. There is nothing the role can do about that.