[release-1.30] add org.opencontainers.image url and source labels to dockerfiles

[brandond]

Proposed Changes

This PR adds the image metadata labels to rke2-runtime image

Types of Changes

enhancement

Verification

check rke2-runtime image labels

Testing

Linked Issues

• Add metadata labels to rke2 images #4238

User-Facing Change

Further Comments

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 9.53%. Comparing base (45919e6) to head (2c5a674).

❗ There is a different number of reports uploaded between BASE (45919e6) and HEAD (2c5a674). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (45919e6)	HEAD (2c5a674)
unittests	1	0

Additional details and impacted files

@@               Coverage Diff                @@
##           release-1.30   #7063       +/-   ##
================================================
- Coverage         25.09%   9.53%   -15.56%     
================================================
  Files                33      33               
  Lines              2841    2841               
================================================
- Hits                713     271      -442     
- Misses             2081    2547      +466     
+ Partials             47      23       -24     

Flag	Coverage Δ
inttests	9.53% <ø> (ø)
unittests	?

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