Shorten test code

When we are fabricating a resource that is returned, and the only
thing we want to do with such a resource is visiting it after its
fabrication, we can call the visit! method directly after its fa-
brication without the need for a variable definition.

qa/qa/specs/features/browser_ui/3_create/repository/push_over_http_spec.rb

@@ -6,12 +6,11 @@ module QA
       it 'user pushes code to the repository' do
         Flow::Login.sign_in
 
-        project_push = Resource::Repository::ProjectPush.fabricate! do |push|
+        Resource::Repository::ProjectPush.fabricate! do |push|
           push.file_name = 'README.md'
           push.file_content = '# This is a test project'
           push.commit_message = 'Add README.md'
-        end
-        project_push.project.visit!
+        end.project.visit!
 
         expect(page).to have_content('README.md')
         expect(page).to have_content('This is a test project')

qa/qa/specs/features/browser_ui/3_create/repository/use_ssh_key_spec.rb

@@ -15,14 +15,12 @@ module QA
           resource.title = key_title
         end
 
-        project_push = Resource::Repository::ProjectPush.fabricate! do |push|
+        Resource::Repository::ProjectPush.fabricate! do |push|
           push.ssh_key = key
           push.file_name = 'README.md'
           push.file_content = '# Test Use SSH Key'
           push.commit_message = 'Add README.md'
-        end
-
-        project_push.project.visit!
+        end.project.visit!
 
         expect(page).to have_content('README.md')
         expect(page).to have_content('Test Use SSH Key')