fix(test): fix type definition of outboundPortExclusionList
This commit fixes the failed case below:
```
Unexpected error:
827 <*errors.errorString | 0xc0015ccaa0>: {
...
833 /home/runner/work/osm/osm/tests/e2e/e2e_port_exclusion_test.go:70
```
@@ -91,7 +91,7 @@ spec:
description: Global list of ports to exclude from outbound traffic interception by the sidecar proxy.
type: array
items:
- type: integer
+ type: string
pattern: ^[1-9]\d*$
useHTTPSIngress:
description: Enable HTTPS ingress on the mesh
