test: fixed and enabled group update on missing key test

test/mp_sync_test.py

@@ -123,8 +123,9 @@ def nokey_in_a_group_of_3_members():
     for action in [
         (flush_all_mails,),
         ("GroupA1", [create_account, ["second@group.a", "GroupA Second"]]),
+        (flush_all_mails,),
         ("GroupA1", [decrypt_message, [enc_msg]], expect(PEP_rating_have_no_key)),
-        (cycle_until_no_change, ["GroupA1", "GroupA2", "GroupA3"], expect(2)),
+        (cycle_until_no_change, ["GroupA1", "GroupA2", "GroupA3"], expect(3)),
         ("GroupA1", [decrypt_message, [enc_msg]], expect(PEP_rating_reliable)),
         ("GroupA2", [create_account, ["second@group.a", "GroupA Second"]]),
         ("GroupA2", [decrypt_message, [enc_msg]], expect(PEP_rating_reliable)),
@@ -135,5 +136,5 @@ if __name__ == "__main__":
     run_scenario(group_on_cannotdecrypt)
     run_scenario(group_of_3_members)
     run_scenario(keygen_in_a_group_of_3_members)
-    #run_scenario(nokey_in_a_group_of_3_members)
+    run_scenario(nokey_in_a_group_of_3_members)