Remove use of CtlplaneNetmask

This change removes use of CtlplaneNetmask in line with
the changes proposed in:
openstack-k8s-operators/openstack-baremetal-operator#241

Signed-off-by: Brendan Shephard <bshephar@redhat.com>

Author: Brendan Shephard

tests/functional/dataplane/openstackdataplanenodeset_controller_test.go

@@ -301,7 +301,6 @@ var _ = Describe("Dataplane NodeSet Test", func() {
 						ProvisioningInterface: "",
 						CtlplaneInterface:     "",
 						CtlplaneGateway:       "",
-						CtlplaneNetmask:       "255.255.255.0",
 						BmhNamespace:          "openshift-machine-api",
 						HardwareReqs: baremetalv1.HardwareReqs{
 							CPUReqs: baremetalv1.CPUReqs{
@@ -440,7 +439,6 @@ var _ = Describe("Dataplane NodeSet Test", func() {
 						ProvisioningInterface: "",
 						CtlplaneInterface:     "",
 						CtlplaneGateway:       "",
-						CtlplaneNetmask:       "255.255.255.0",
 						BmhNamespace:          "openshift-machine-api",
 						HardwareReqs: baremetalv1.HardwareReqs{
 							CPUReqs: baremetalv1.CPUReqs{
@@ -892,7 +890,6 @@ var _ = Describe("Dataplane NodeSet Test", func() {
 						ProvisioningInterface: "",
 						CtlplaneInterface:     "",
 						CtlplaneGateway:       "",
-						CtlplaneNetmask:       "255.255.255.0",
 						BmhNamespace:          "openshift-machine-api",
 						HardwareReqs: baremetalv1.HardwareReqs{
 							CPUReqs: baremetalv1.CPUReqs{

tests/kuttl/tests/dataplane-deploy-global-service-test/00-dataplane-create.yaml

@@ -139,7 +139,6 @@ spec:
     bmhNamespace: openshift-machine-api
     cloudUserName: ""
     ctlplaneInterface: ""
-    ctlplaneNetmask: 255.255.255.0
     deploymentSSHSecret: ""
     hardwareReqs:
       cpuReqs:

tests/kuttl/tests/dataplane-deploy-global-service-test/02-add-nodeset.yaml

@@ -8,7 +8,6 @@ spec:
     bmhNamespace: openshift-machine-api
     cloudUserName: ""
     ctlplaneInterface: ""
-    ctlplaneNetmask: 255.255.255.0
     deploymentSSHSecret: ""
     hardwareReqs:
       cpuReqs:

tests/kuttl/tests/dataplane-deploy-no-nodes-test/06-add-nodeset.yaml

@@ -8,7 +8,6 @@ spec:
     bmhNamespace: openshift-machine-api
     cloudUserName: ""
     ctlplaneInterface: ""
-    ctlplaneNetmask: 255.255.255.0
     deploymentSSHSecret: ""
     hardwareReqs:
       cpuReqs: