bitbake: toaster: selenium tests Update unique custom image string and fix import

- Update the string for recognising a duplicate image recipe
- Fix an incorrect relative import

(Bitbake rev: 830743b1aa29a5ac220141e9c24b2592d6cebb29)

Signed-off-by: Michael Wood <michael.g.wood@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/toaster/tests/browser/test_builddashboard_page.py

@@ -22,7 +22,7 @@
 from django.core.urlresolvers import reverse
 from django.utils import timezone
 
-from selenium_helpers import SeleniumTestCase
+from tests.browser.selenium_helpers import SeleniumTestCase
 
 from orm.models import Project, Release, BitbakeVersion, Build, LogMessage
 from orm.models import Layer, Layer_Version, Recipe, CustomImageRecipe

bitbake/lib/toaster/tests/browser/test_new_custom_image_page.py

@@ -25,6 +25,7 @@ from tests.browser.selenium_helpers import SeleniumTestCase
 from orm.models import BitbakeVersion, Release, Project, ProjectLayer, Layer
 from orm.models import Layer_Version, Recipe, CustomImageRecipe
 
+
 class TestNewCustomImagePage(SeleniumTestCase):
     CUSTOM_IMAGE_NAME = 'roopa-doopa'
 
@@ -140,7 +141,7 @@ class TestNewCustomImagePage(SeleniumTestCase):
         self._create_custom_image(self.recipe.name)
         element = self.wait_until_visible('#invalid-name-help')
         self.assertRegexpMatches(element.text.strip(),
-                                 'recipe with this name already exists')
+                                 'image with this name already exists')
 
     def test_new_duplicates_project_image(self):
         """