osdict: Make the broken uefi+hyperv bit more explicit

And add links to the relevant bug reports

virtinst/guest.py

@@ -506,7 +506,7 @@ class Guest(XMLBuilder):
         if not self.osinfo.is_windows():
             return False
         if (self.os.loader_type == "pflash" and
-            self.os_variant in ("win2k8r2", "win7")):
+            self.osinfo.broken_uefi_with_hyperv()):
             return False
         return True
 

virtinst/osdict.py

@@ -331,6 +331,12 @@ class _OsVariant(object):
         # https://bugs.launchpad.net/bugs/1395217
         return self.name in ('solaris10', 'solaris11')
 
+    def broken_uefi_with_hyperv(self):
+        # Some windows versions are broken with hyperv enlightenments + UEFI
+        # https://bugzilla.redhat.com/show_bug.cgi?id=1185253
+        # https://bugs.launchpad.net/qemu/+bug/1593605
+        return self.name in ("win2k8r2", "win7")
+
     def get_clock(self):
         if self.is_windows() or self._family in ['solaris']:
             return "localtime"