Fix pod disruption budget (#483)

Author: liam-mackie

.changeset/cold-parks-begin.md

@@ -0,0 +1,5 @@
+---
+"kubernetes-agent": patch
+---
+
+Fix issues with pod disruption budget

charts/kubernetes-agent/templates/script-pdb.yaml

@@ -5,7 +5,7 @@ metadata:
   name: script-pod-disruption-budget
   namespace: {{ .Release.Namespace }}
 spec:
-  maxUnavailable: 0
+  minAvailable: 8888
   selector:
     matchExpressions:
     - { key: octopus.com/scriptTicketId, operator: Exists }

charts/kubernetes-agent/tests/__snapshot__/script-pdb_test.yaml.snap

@@ -6,7 +6,7 @@ should match snapshot:
       name: script-pod-disruption-budget
       namespace: NAMESPACE
     spec:
-      maxUnavailable: 0
+      minAvailable: 8888
       selector:
         matchExpressions:
           - key: octopus.com/scriptTicketId

charts/kubernetes-agent/tests/script-pdb_test.yaml

@@ -28,8 +28,8 @@ tests:
           path: metadata.name
           value: script-pod-disruption-budget
       - equal:
-          path: spec.maxUnavailable
-          value: 0
+          path: spec.minAvailable
+          value: 8888
       - equal:
           path: spec.selector.matchExpressions[0].key
           value: octopus.com/scriptTicketId