jenkins: use emptyDir workspace for default agents

services/jenkins/configmap-jcasc.yaml

@@ -399,10 +399,8 @@ data:
             - name: "default"
               namespace: "jenkins"
               workspaceVolume:
-                dynamicPVC:
-                  accessModes: "ReadWriteOnce"
-                  requestsSize: "20Gi"
-                  storageClassName: "astreae"
+                emptyDirWorkspaceVolume:
+                  memory: false
               containers:
               - name: "jnlp"
                 args: "^${computer.jnlpmac} ^${computer.name}"
@@ -412,8 +410,6 @@ data:
                       value: "http://jenkins.jenkins.svc.cluster.local:8080/"
                 image: "jenkins/inbound-agent:3355.v388858a_47b_33-3"
                 privileged: "false"
-                runAsUser: "0"
-                runAsGroup: "0"
                 resourceLimitCpu: 512m
                 resourceLimitMemory: 512Mi
                 resourceRequestCpu: 512m