ceph-volume: adds has_gpt_headers property to Device class

Signed-off-by: Andrew Schoen <aschoen@redhat.com>

Resolves: rm#27062

src/ceph-volume/ceph_volume/util/device.py

@@ -211,6 +211,10 @@ class Device(object):
     def exists(self):
         return os.path.exists(self.abspath)
 
+    @property
+    def has_gpt_headers(self):
+        return self.blkid_api.get("PTTYPE") == "gpt"
+
     @property
     def rotational(self):
         return self.sys_api['rotational'] == '1'