Correct whitelist to non-government in test name

See c31264d4c for why ‘whitelist’ should be avoided. The use of
whitelist here was not referring to the user-maintained list, but to
mean ‘not a government’ email address. This commit renames these tests
to make that difference clear.

tests/app/main/views/test_add_service.py

@@ -314,7 +314,7 @@ def test_should_return_form_errors_with_duplicate_service_name_regardless_of_cas
     )
 
 
-def test_non_whitelist_user_cannot_access_create_service_page(
+def test_non_government_user_cannot_access_create_service_page(
     client_request,
     mock_get_non_govuser,
     api_nongov_user_active,
@@ -327,7 +327,7 @@ def test_non_whitelist_user_cannot_access_create_service_page(
     )
 
 
-def test_non_whitelist_user_cannot_create_service(
+def test_non_government_user_cannot_create_service(
     client_request,
     mock_get_non_govuser,
     api_nongov_user_active,

tests/app/main/views/test_forgot_password.py

@@ -15,7 +15,7 @@ def test_should_render_forgot_password(client):
 
 @pytest.mark.parametrize('email_address', [
     'test@user.gov.uk',
-    'someuser@notonwhitelist.com'
+    'someuser@notgovernment.com'
 ])
 def test_should_redirect_to_password_reset_sent_for_valid_email(
     client,

tests/app/main/views/test_manage_users.py

@@ -684,7 +684,7 @@ def test_should_show_folder_permission_form_if_service_has_folder_permissions_en
 
 @pytest.mark.parametrize('email_address, gov_user', [
     ('test@example.gov.uk', True),
-    ('test@nonwhitelist.com', False)
+    ('test@example.com', False)
 ])
 def test_invite_user(
     client_request,
@@ -735,7 +735,7 @@ def test_invite_user(
 ])
 @pytest.mark.parametrize('email_address, gov_user', [
     ('test@example.gov.uk', True),
-    ('test@nonwhitelist.com', False)
+    ('test@example.com', False)
 ])
 def test_invite_user_with_email_auth_service(
     client_request,