md-namespace-create

example)
$ glance md-namespace-create test-namespace
+----------------+-----------------------------------------------------+
| Property      | Value                                                       |
+----------------+-----------------------------------------------------+
| created_at   | 2022-06-23T01:30:45Z                          |
| namespace | test-namespace                                      |
…
| visibility       | private                                                     |
+----------------+-----------------------------------------------------+



md-property-create

example) 
$ glance md-property-create FredCo::SomeCategory::Example --name property-create --title property-title --schema '
{
    "description": "test property",
    "enum": [
        "xen",
        "qemu",
        "kvm",
        "lxc",
        "uml",
        "vmware",
        "hyperv"
    ],          
    "type": "string"
}' 
+----------------+-------------------------------------------------------------------------+
| Property      | Value                                                                               |
+----------------+-------------------------------------------------------------------------+
| description  | test property                                                                     |
| enum           | ["xen", "qemu", "kvm", "lxc", "uml", "vmware", "hyperv"] |
| name           | property-create                                                               |
| title              | property-title                                                                    |
| type             | string                                                                               |
+----------------+-------------------------------------------------------------------------+