smoke: document cutting-edge test as merged ahead of MCR support

rhel10/rocky10 AMIs and provision-aws platform keys (v0.1.7) are already
available, but launchpad's own smoke coverage previously failed with
'package manager could not install docker-ee' because repos.mirantis.com
had not yet published docker-ee for rhel/10 or rocky/10.

Checked repos.mirantis.com directly: docker-ee is now present in both
rhel/10/x86_64/stable-29.4 and rocky/10/x86_64/stable-29.4 -- that gap
looks closed, matching the AMI-availability timing pattern seen
elsewhere this cycle (Oracle Linux, Rocky 8).

Strategy going forward: keep TestCuttingEdgeCluster merged and
label-gated rather than blocking on it going green immediately, so it
picks up MCR support automatically as soon as it lands, with no further
code changes. Documented that intent on the Makefile target and the
GitHub Actions job.

Written by AI: claude-sonnet-5

Author: james-nesbitt

.github/workflows/smoke-tests.yaml

@@ -66,6 +66,12 @@ jobs:
           AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
         run: make smoke-legacy
 
+  # Bleeding-edge platforms (rhel10/rocky10). MCR package availability for
+  # these platforms lags their AMI/repo-metadata availability -- this job is
+  # intentionally merged ahead of full support so it goes green automatically,
+  # with no further workflow changes, once repos.mirantis.com publishes
+  # docker-ee for rhel/10 and rocky/10. Label-gated rather than always-on
+  # while that support is pending.
   smoke-cutting-edge:
     runs-on: ubuntu-latest
     if: |

Makefile

@@ -52,6 +52,12 @@ functional-test:
 integration-test:
 	go test -v ./test/integration/... -timeout 20m
 
+# Targets bleeding-edge platforms (rhel10/rocky10) via TestCuttingEdgeCluster.
+# MCR package availability for these platforms lags their AMI/repo-metadata
+# availability -- this target (and its CI job) is intentionally merged ahead
+# of full support so it goes green automatically, with no further code
+# changes, the moment repos.mirantis.com publishes docker-ee for rhel/10 and
+# rocky/10. Run manually or via the smoke-cutting-edge label to check status.
 .PHONY: smoke-cutting-edge
 smoke-cutting-edge:
 	go test -count=1 -v ./test/smoke/... -run TestCuttingEdgeCluster -timeout 50m