bitbake: toaster: typeaheads Add a git revisions suggestions

When we're importing a layer it's useful to suggest available git revisions of the
layers. This uses git ls-remote to fetch the revisions and then filter on this.
Caching is added for this typeahead to avoid having to fetch this
information multiple times in a single session.

[YOCTO #8429]

(Bitbake rev: a94ae3ad0cb07a52004143c6f86f371b9e330e9f)

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

bitbake/lib/toaster/toastergui/urls.py

@@ -182,8 +182,9 @@ urlpatterns = patterns('toastergui.views',
             typeaheads.RecipesTypeAhead.as_view(), name='xhr_recipestypeahead'),
         url(r'^xhr_typeahead/projects$',
             typeaheads.ProjectsTypeAhead.as_view(), name='xhr_projectstypeahead'),
-
-
+        url(r'^xhr_typeahead/gitrev$',
+            typeaheads.GitRevisionTypeAhead.as_view(),
+            name='xhr_gitrevtypeahead'),
 
         url(r'^xhr_testreleasechange/(?P<pid>\d+)$', 'xhr_testreleasechange',
             name='xhr_testreleasechange'),