oeqa/sdk: Default to https git protocol for YP/OE repos

Following up on commit 139102a73d41 ("recipes: Default to https git protocol where possible"),
> The recommendation from server maintainers is that the https protocol
> is both faster and more reliable than the dedicated git protocol at this point.
> Switch to it where possible.

(From OE-Core rev: a88f039a3cf5c98824ebb19355d7cadeb36dc136)

Signed-off-by: Yoann Congal <yoann.congal@smile.fr>
Signed-off-by: Paul Barker <paul@pbarker.dev>

meta/lib/oeqa/sdk/buildtools-docs-cases/build.py

@@ -13,5 +13,5 @@ class BuildTests(OESDKTestCase):
     """
     def test_docs_build(self):
         with tempfile.TemporaryDirectory(prefix='docs-tarball-build-', dir=self.tc.sdk_dir) as testdir:
-            self._run('git clone git://git.yoctoproject.org/yocto-docs %s' % testdir)
+            self._run('git clone https://git.yoctoproject.org/yocto-docs %s' % testdir)
             self._run('cd %s/documentation && make html' % testdir)