oauth_google_login: apply a 10 seconds timeout when connecting to google server

In case of network problems, the http requests made to google during
login may take too long and cause global unavailability of the ERP5
instance.

Today we saw in long request logs:

    2023-05-29 07:10:35,662 - Thread 140596157511424: Started on 1685336511.6; Running for 524.1 secs; Same.

oauth2client does not expose an API to set a timeout, but it allows
passing a custom http instance where we can set a timeout.
10 jobs for fix/google-login-timeout in 0 seconds (queued for 4 seconds)
Status Job ID Name Coverage
  External
passed ERP5.CodingStyleTest-Master

01:04:47

passed ERP5.CodingStyleTest-TestRunner2

00:35:39

passed ERP5.PerformanceTest-Master

00:26:54

failed ERP5.UnitTest-Master

01:35:54

failed ERP5.UnitTest-TestRunner2

01:47:46

running ERP5.UnitTest-Zope2

8004:59:29

passed ERP5.UnitTest-Zope2-ForTestRunner2

01:21:54

passed SlapOS.Eggs.UnitTest-Master.Python2

00:12:41

passed SlapOS.Eggs.UnitTest-Master.Python3

00:14:33

passed Wendelin.UnitTest-Master

00:33:56