pylint: fix import-error

It seems pylint cannot handle distutils imports
and shows "import-error" error. I believe it sounds
reasonable to ignore this case.

Change-Id: Ia08b4fbf8c3270aa37cd88967add8258f6b26377

.pylintrc

@@ -10,7 +10,6 @@ disable=
 # "I" Informational noise
  locally-disabled,
 # "E" Error for important programming issues (likely bugs)
- import-error,
  method-hidden,
  misplaced-bare-raise,
  no-member,

openstack_dashboard/hooks.py

@@ -13,7 +13,7 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-# pylint: disable=no-name-in-module
+# pylint: disable=no-name-in-module,import-error
 from distutils.command import install
 
 

openstack_dashboard/management/commands/extract_messages.py

@@ -12,6 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+# pylint: disable=import-error
 from distutils.dist import Distribution
 import os
 from subprocess import call