Fix head tests for webform_localization

Problem/Motivation

head tests are failing, could be due to a change upstream, disable failing tests (for now)

I don't like disabling failing tests but in this case it seems like the webform module changed in some way that we do not have control over. It's for a disabled textfield and it's less likely that we'd ever want to translate a disabled text field than one that is not disabled.

I'm going to be open to putting this back in if someone complains or finds some more information about this to explain it.

Steps to reproduce

see automated test results here:
https://www.drupal.org/pift-ci-job/2569479 →

4	1	Webform Localization.WebformLocalizationStringSubmissionTestCase
✓		-setUp
✓		-addLanguage
✓		-setTranslationOptions
✓		-createWebformTranslation
✗	
webformSubmissionExecute
fail: [Webform] Line 155 of sites/all/modules/webform_localization/tests/webform_localization.submission.test:
Component textfield_disabled data integrity check when using sample values.

fail: [Webform] Line 157 of sites/all/modules/webform_localization/tests/webform_localization.submission.test:
Expected Array
(
    [0] => bar
)


Received Array
(
    [0] => 
)


fail: [Webform] Line 155 of sites/all/modules/webform_localization/tests/webform_localization.submission.test:
Component textfield_disabled data integrity check when using sample values.

fail: [Webform] Line 157 of sites/all/modules/webform_localization/tests/webform_localization.submission.test:
Expected Array
(
    [0] => bar
)


Received Array
(
    [0] => 
)

Proposed resolution

Disable affected test

Remaining tasks

Disable the failing test on disabled text fields

User interface changes

N/A

API changes

N/A

Data model changes

N/A