Deprecate unused exceptions

Deprecate the following unused exceptions:
* VMwareDriverConfigurationException
* UseLinkedCloneConfigurationFault
* MissingParameter

The above exceptions are specific to VMware Nova driver and
should be moved to Nova code base.

Change-Id: I74482d6ac436fbea4383a197f24704bc3d033076

oslo_vmware/exceptions.py

@@ -21,7 +21,7 @@ import logging
 
 import six
 
-from oslo_vmware._i18n import _, _LE
+from oslo_vmware._i18n import _, _LE, _LW
 
 LOG = logging.getLogger(__name__)
 
@@ -165,11 +165,21 @@ class ImageTransferException(VMwareDriverException):
         self.cause = cause
 
 
+def _print_deprecation_warning(clazz):
+    LOG.warn(_LW("Exception %s is deprecated, it will be removed in the "
+                 "next release."), clazz.__name__)
+
+
 class VMwareDriverConfigurationException(VMwareDriverException):
     """Base class for all configuration exceptions.
     """
     msg_fmt = _("VMware Driver configuration fault.")
 
+    def __init__(self, message=None, details=None, **kwargs):
+        super(VMwareDriverConfigurationException, self).__init__(
+            message, details, **kwargs)
+        _print_deprecation_warning(self.__class__)
+
 
 class UseLinkedCloneConfigurationFault(VMwareDriverConfigurationException):
     msg_fmt = _("No default value for use_linked_clone found.")
@@ -178,6 +188,10 @@ class UseLinkedCloneConfigurationFault(VMwareDriverConfigurationException):
 class MissingParameter(VMwareDriverException):
     msg_fmt = _("Missing parameter : %(param)s")
 
+    def __init__(self, message=None, details=None, **kwargs):
+        super(MissingParameter, self).__init__(message, details, **kwargs)
+        _print_deprecation_warning(self.__class__)
+
 
 class AlreadyExistsException(VimException):
     msg_fmt = _("Resource already exists.")