Add seedJobAgentImage into CRD (#754)

* Add seedJobAgentImage into CRD

* Fix lint by ignoring auto-generated files

.golangci.yml

@@ -1,10 +1,11 @@
 run:
   deadline: 10m
+  skip-files:
+    - api/v1alpha2/zz_generated.deepcopy.go
 linters-settings:
   errcheck:
     check-blank: false
     ignore: fmt:.*,io/ioutil:^Read.*,Write
-
 linters:
   enable-all: true
   disable:

config/crd/bases/jenkins.io_jenkins.yaml

@@ -3118,6 +3118,9 @@ spec:
                   - name
                   type: object
                 type: array
+              seedJobAgentImage:
+                type: string
+                description: SeedJobAgentImage defines the image that will be used by the seed job agent. If not defined jenkins/inbound-agent:4.9-1 will be used.
               seedJobs:
                 description: 'SeedJobs defines list of Jenkins Seed Job configurations
                   More info: https://jenkinsci.github.io/kubernetes-operator/docs/getting-started/latest/configuration#configure-seed-jobs-and-pipelines'