fix(ci): bootstrap virtualization print nodes for debug (#2317)

Description
Make the nested E2E bootstrap diagnostics more tolerant to temporary Kubernetes API failures.

This change keeps debug output commands from failing the workflow when the nested cluster API temporarily returns errors, and updates the virt-handler readiness loop to recalculate worker nodes on every attempt. If worker nodes cannot be listed, the loop now keeps waiting instead of treating 0/0 as a successful virt-handler readiness state.

------------------

Signed-off-by: Nikita Korolev <nikita.korolev@flant.com>

Author: universal-itengineer

.github/workflows/e2e-reusable-pipeline.yml

@@ -836,18 +836,18 @@ jobs:
 
             echo "[ERROR] Blockdevices is not 3"
             echo "[DEBUG] Show cluster nodes"
-            kubectl get nodes
+            kubectl get nodes || echo "[WARNING] Failed to get cluster nodes"
             echo "[DEBUG] Show blockdevices"
-            kubectl get blockdevice
+            kubectl get blockdevice || echo "[WARNING] Failed to get blockdevices"
             echo "[DEBUG] Show sds namespaces"
-            kubectl get ns | grep sds || echo "ns sds is not found"
+            kubectl get ns | grep sds || echo "[WARNING] Namespace sds is not found"
             echo "[DEBUG] Show pods in sds-replicated-volume"
             echo "::group::📦 pods in sds-replicated-volume"
-            kubectl -n d8-sds-replicated-volume get pods || true
+            kubectl -n d8-sds-replicated-volume get pods || echo "[WARNING] Failed to get pods in sds-replicated-volume"
             echo "::endgroup::"
             echo "[DEBUG] Show deckhouse logs"
             echo "::group::📝 deckhouse logs"
-            d8 s logs | tail -n 100
+            d8 s logs | tail -n 100 || echo "[WARNING] Failed to get deckhouse logs"
             echo "::endgroup::"
             exit 1
           }
@@ -1070,7 +1070,7 @@ jobs:
             echo "[DEBUG] Show cluster StorageClasses"
             kubectl get storageclasses || true
             echo "[DEBUG] Show cluster nodes"
-            kubectl get node
+            kubectl get node || true
 
             echo "[DEBUG] Show cluster node yaml and describe"
             NODES=$(kubectl get no -o jsonpath='{range .items[?(@.metadata.name)]}{.metadata.name}{"\n"}{end}')
@@ -1158,27 +1158,33 @@ jobs:
             local workers
             local time_wait=10
 
-            workers=$(kubectl get nodes -o name | grep worker | wc -l || true)
-            workers=$((workers))
-
             for i in $(seq 1 $count); do
+              workers=$(kubectl get nodes -o name | grep worker | wc -l || true)
+              workers=$((workers))
+              if [[ $workers -eq 0 ]]; then
+                echo "[WARNING] No worker nodes found, keep waiting"
+                echo "[INFO] Wait ${time_wait}s virt-handler pods are ready (attempt $i/$count)"
+                sleep ${time_wait}
+                continue
+              fi
+
               virt_handler_ready=$(kubectl -n d8-virtualization get pods | grep "virt-handler.*Running" | wc -l || true)
 
               if [[ $virt_handler_ready -ge $workers ]]; then
-                echo "[SUCCESS] virt-handlers pods are ready"
+                echo "[SUCCESS] virt-handlers pods are ready $virt_handler_ready/$workers"
                 return 0
               fi
 
-              echo "[INFO] virt-handler pods $virt_handler_ready/$workers "
+              echo "[INFO] virt-handler pods $virt_handler_ready/$workers"
               echo "[INFO] Wait ${time_wait}s virt-handler pods are ready (attempt $i/$count)"
               if (( i % 5 == 0 )); then
                 echo "[DEBUG] Show pods in namespace d8-virtualization"
                 echo "::group::📦 virtualization pods"
-                kubectl -n d8-virtualization get pods || echo "No pods in virtualization namespace found"
+                kubectl -n d8-virtualization get pods || echo "[WARNING] No pods in virtualization namespace found"
                 echo "::endgroup::"
                 echo "[DEBUG] Show cluster nodes"
                 echo "::group::📦 cluster nodes"
-                kubectl get node
+                kubectl get node || echo "[WARNING] Failed to get cluster nodes"
                 echo "::endgroup::"
               fi
               sleep ${time_wait}