Bumping gaia.json for 2 gaia-1_2 revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-1_2/rev/9d286e181309
Author: Bob Silverberg <bob.silverberg@gmail.com>
Desc: Merge pull request #14069 from viorelaioia/bug_930052_v1.2

[v1.2] Bug 930052 - Reduce exposure to launch() method inside tests.

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https://hg.mozilla.org/integration/gaia-1_2/rev/c499b9bca245
Author: Viorela Ioia <viorelaioia@gmail.com>
Desc: [v1.2] Bug 930052 - Reduce exposure to launch() method inside tests.
Bumping gaia.json for 2 gaia-1_2 revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-1_2/rev/d4904b75f710
Author: Bob Silverberg <bob.silverberg@gmail.com>
Desc: Merge pull request #14018 from AndreiH/bug932240_v1.2

Bug 932240 - Test browser https auth login

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https://hg.mozilla.org/integration/gaia-1_2/rev/472ef126828a
Author: Eduardo Stalinho <eduardooc.86@gmail.com>
Desc: Bug 932240 - Test browser https auth login
adds new test for https basic auth login

what the test does now:
1 - loads browser
2 - goes to http://mozqa.com/data/mozqa.com/http_auth/
3 - fills the browser login form
4 - fails on trying to see if the user is logged in (it probably is not the
right way)

waits for success page to be loaded to verify success

adds test to manifest.ini

refactoring for authentication_dialog region

- moves login items such as username and password input to authentication
dialog region
- uses send_keys on inputs, instead of keyboard.send
- uses authenticate method from region
- tests if correct message is displayed on correct place using xpath

oops! parameters passed were not being used

Trying to find a pattern to write the test.

- Uses By instead of root_element to find elements on page.
- Uses more efficient and human-readable names for methods inside the
region.
- Writes the funcional test on an inline way instead of using methods.

app region has to know its root element which is its own dialog

no need to look for auth dialog on test, use it on athenticate