Support cluster wide

Currently the ps-operator only allows to initialize ps-db in the same namespace.

....
spec:
containers:
-args:
---leader-elect
command:
-/usr/local/bin/percona-server-mysql-operator
env:
-name:LOG_STRUCTURED
value:"false"
-name:LOG_LEVEL
value:DEBUG
-name:WATCH_NAMESPACE
valueFrom:
fieldRef:
apiVersion:v1
fieldPath:metadata.namespace
image:percona/percona-server-mysql-operator:0.4.0
....
 
Edit WATCH_NAMESPACE environment variable does not help
-------
 
E0222 09:11:10.817796 1 reflector.go:140] pkg/mod/k8s.io/client-go@v0.25.4/tools/cache/reflector.go:169: Failed to watch *v1alpha1.PerconaServerMySQLRestore: failed to list *v1alpha1.PerconaServerMySQLRestore: perconaservermysqlrestores.ps.percona.com is forbidden: User "system:serviceaccount:infra-operator:ps-operator" cannot list resource "perconaservermysqlrestores" in API group "ps.percona.com" in the namespace "infra-databases"
W0222 09:11:10.949205 1 reflector.go:424] pkg/mod/k8s.io/client-go@v0.25.4/tools/cache/reflector.go:169: failed to list *v1.Job: jobs.batch is forbidden: User "system:serviceaccount:infra-operator:ps-operator" cannot list resource "jobs" in API group "batch" in the namespace "infra-databases"
E0222 09:11:10.949333 1 reflector.go:140] pkg/mod/k8s.io/client-go@v0.25.4/tools/cache/reflector.go:169: Failed to watch *v1.Job: failed to list *v1.Job: jobs.batch is forbidden: User "system:serviceaccount:infra-operator:ps-operator" cannot list resource "jobs" in API group "batch" in the namespace "infra-databases"
W0222 09:11:19.279838 1 reflector.go:424] pkg/mod/k8s.io/client-go@v0.25.4/tools/cache/reflector.go:169: failed to list *v1alpha1.PerconaServerMySQL: perconaservermysqls.ps.percona.com is forbidden: User "system:serviceaccount:infra-operator:ps-operator" cannot list resource "perconaservermysqls" in API group "ps.percona.com" in the namespace "infra-databases"
E0222 09:11:19.280064 1 reflector.go:140] pkg/mod/k8s.io/client-go@v0.25.4/tools/cache/reflector.go:169: Failed to watch *v1alpha1.PerconaServerMySQL: failed to list *v1alpha1.PerconaServerMySQL: perconaservermysqls.ps.percona.com is forbidden: User "system:serviceaccount:infra-operator:ps-operator" cannot list resource "perconaservermysqls" in API group "ps.percona.com" in the namespace "infra-databases"
W0222 09:11:37.960360 1 reflector.go:424] pkg/mod/k8s.io/client-go@v0.25.4/tools/cache/reflector.go:169: failed to list *v1alpha1.PerconaServerMySQLBackup: perconaservermysqlbackups.ps.percona.com is forbidden: User "system:serviceaccount:infra-operator:ps-operator" cannot list resource "perconaservermysqlbackups" in API group "ps.percona.com" in the namespace "infra-databases"
E0222 09:11:37.960392 1 reflector.go:140] pkg/mod/k8s.io/client-go@v0.25.4/tools/cache/reflector.go:169: Failed to watch *v1alpha1.PerconaServerMySQLBackup: failed to list *v1alpha1.PerconaServerMySQLBackup: perconaservermysqlbackups.ps.percona.com is forbidden: User "system:serviceaccount:infra-operator:ps-operator" cannot list resource "perconaservermysqlbackups" in API group "ps.percona.com" in the namespace "infra-databases"
W0222 09:11:52.396208 1 reflector.go:424] pkg/mod/k8s.io/client-go@v0.25.4/tools/cache/reflector.go:169: failed to list *v1alpha1.PerconaServerMySQLRestore: perconaservermysqlrestores.ps.percona.com is forbidden: User "system:serviceaccount:infra-operator:ps-operator" cannot list resource "perconaservermysqlrestores" in API group "ps.percona.com" in the namespace "infra-databases"
E0222 09:11:52.396560 1 reflector.go:140] pkg/mod/k8s.io/client-go@v0.25.4/tools/cache/reflector.go:169: Failed to watch *v1alpha1.PerconaServerMySQLRestore: failed to list *v1alpha1.PerconaServerMySQLRestore: perconaservermysqlrestores.ps.percona.com is forbidden: User "system:serviceaccount:infra-operator:ps-operator" cannot list resource "perconaservermysqlrestores" in API group "ps.percona.com" in the namespace "infra-databases"
W0222 09:11:56.483166 1 reflector.go:424] pkg/mod/k8s.io/client-go@v0.25.4/tools/cache/reflector.go:169: failed to list *v1.Job: jobs.batch is forbidden: User "system:serviceaccount:infra-operator:ps-operator" cannot list resource "jobs" in API group "batch" in the namespace "infra-databases"
E0222 09:11:56.483199 1 reflector.go:140] pkg/mod/k8s.io/client-go@v0.25.4/tools/cache/reflector.go:169: Failed to watch *v1.Job: failed to list *v1.Job: jobs.batch is forbidden: User "system:serviceaccount:infra-operator:ps-operator" cannot list resource "jobs" in API group "batch" in the namespace "infra-databases"
W0222 09:12:04.126054 1 reflector.go:424] pkg/mod/k8s.io/client-go@v0.25.4/tools/cache/reflector.go:169: failed to list *v1alpha1.PerconaServerMySQL: perconaservermysqls.ps.percona.com is forbidden: User "system:serviceaccount:infra-operator:ps-operator" cannot list resource "perconaservermysqls" in API group "ps.percona.com" in the namespace "infra-databases"
E0222 09:12:04.126092 1 reflector.go:140] pkg/mod/k8s.io/client-go@v0.25.4/tools/cache/reflector.go:169: Failed to watch *v1alpha1.PerconaServerMySQL: failed to list *v1alpha1.PerconaServerMySQL: perconaservermysqls.ps.percona.com is forbidden: User "system:serviceaccount:infra-operator:ps-operator" cannot list resource "perconaservermysqls" in API group "ps.percona.com" in the namespace "infra-databases"