test: Adapt the scripts to be compatible with dash

Author: siegfriedweber

tests/templates/kuttl/restarter/10-assert.yaml

@@ -4,7 +4,7 @@ kind: TestAssert
 timeout: 120
 commands:
   - script: |
-      . test-script.sh
+      . ./test-script.sh
 
       # Wait for the StatefulSet to be deployed
       kubectl rollout status statefulset/test --namespace "$NAMESPACE"

tests/templates/kuttl/restarter/20-assert.yaml

@@ -4,7 +4,7 @@ kind: TestAssert
 timeout: 180
 commands:
   - script: |
-      . test-script.sh
+      . ./test-script.sh
 
       # Wait for a possible restart of the test pod.
       # The restarter controller is expected to ignore the changes in this step, so no restart

tests/templates/kuttl/restarter/21-assert.yaml

@@ -4,7 +4,7 @@ kind: TestAssert
 timeout: 180
 commands:
   - script: |
-      . test-script.sh
+      . ./test-script.sh
 
       # After a restart, all resources should have been updated.