erp5_interface_post: add source base category in Internet Message Post.

that is to store the interface from which the message is imported.
12 jobs for fix/business_template_update in 0 seconds
Status Job ID Name Coverage
  External
failed ERP5.UnitTest-Master

02:03:19

passed SlapOS.Eggs.UnitTest-Master.Python2

01:14:21

passed SlapOS.Eggs.UnitTest-Master.Python3

81:47:53

failed ERP5.UnitTest-Master

09:55:11

passed SlapOS.Eggs.UnitTest-Master.Python2

01:15:10

passed SlapOS.Eggs.UnitTest-Master.Python2

00:51:12

passed SlapOS.Eggs.UnitTest-Master.Python2

01:21:15

passed SlapOS.Eggs.UnitTest-Master.Python2

01:10:34

passed SlapOS.Eggs.UnitTest-Master.Python2

00:52:57

passed SlapOS.Eggs.UnitTest-Master.Python3

00:52:26

passed SlapOS.Eggs.UnitTest-Master.Python3

01:00:05

passed SlapOS.Eggs.UnitTest-Master.Python3

01:05:35