Deploy components into openshift-machine-api namespace

[enxebre]

Create openshift-machine-api namespace
Deploy components into openshift-machine-api namespace
Once this get merged we can update the namespace of the machines run by the installer openshift/installer#1215

[bison]

/lgtm

[ingvagabund]

/approve

[openshift-ci-robot]

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[ingvagabund]

test/integration files needs to be updated as well:

$ grep -rn "openshift-cluster-api"
install/0000_30_machine-api-operator_00_namespace_cluster-api.yaml:4:  name: openshift-cluster-api
install/0000_30_machine-api-operator_00_namespace_cluster-api.yaml:6:    name: openshift-cluster-api
test/e2e/main.go:16:	namespace = "openshift-cluster-api"
test/integration/generate.sh:10:  namespace: openshift-cluster-api
test/integration/manifests/operator-deployment.yaml:5:  namespace: openshift-cluster-api
test/integration/manifests/ign-config.yaml:5:  namespace: openshift-cluster-api
test/integration/manifests/machineset.yaml:9:  namespace: openshift-cluster-api
test/integration/manifests/rbac.yaml:5:  name: default-account-openshift-cluster-api
test/integration/manifests/rbac.yaml:9:  namespace: openshift-cluster-api
test/integration/manifests/cluster.yaml:5:  namespace: openshift-cluster-api
test/integration/manifests/images.configmap.yaml:5:  namespace: openshift-cluster-api
test/integration/main.go:41:	targetNamespace          = "openshift-cluster-api"
pkg/controller/machinehealthcheck/machinehealthcheck_controller_test.go:23:	namespace = "openshift-cluster-api"

[enxebre]

/test e2e-aws

[bison]

/lgtm

[spangenberg]

/retest