Add filter by owner and team to issue/pulls search endpoint (#16662)

* Filter by owner and team in API issue/pulls search

* Add integration test

models/fixtures/issue.yml

@@ -172,3 +172,15 @@
   is_pull: false
   created_unix: 1602935696
   updated_unix: 1602935696
+
+-
+  id: 15
+  repo_id: 5
+  index: 1
+  poster_id: 2
+  name: issue in repo not linked to team1
+  content: content
+  is_closed: false
+  is_pull: false
+  created_unix: 1602935696
+  updated_unix: 1602935696

models/fixtures/repository.yml

@@ -73,7 +73,7 @@
   lower_name: repo5
   name: repo5
   is_private: true
-  num_issues: 0
+  num_issues: 1
   num_closed_issues: 0
   num_pulls: 0
   num_closed_pulls: 0