bitbake: toaster/tests/functional/basic: Improve the projects table selection to a common function

The project page selection code is race prone. Create a common function to resolve
the race issue and use it from all the call sites rather than duplicate code.

(Bitbake rev: f2bd615b97a6ff3944fa9c1d89a0ea996a12943d)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/toaster/tests/functional/functional_helpers.py

@@ -216,3 +216,9 @@ class SeleniumFunctionalTestCase(SeleniumTestCaseBase):
                             'The project release is not defined')
 
         return project_id
+        
+    def load_projects_page_helper(self):        
+        self.wait_until_present('#projectstable')
+        # Need to wait for some data in the table too
+        self.wait_until_present('td[class="updated"]')
+