web-source: Update internet availability when connectivity changes

Going from limited ("captive portal") to full internet should update the
internet availability.
3 jobs for wip/hadess/reduce-internet-avail in 5 minutes and 57 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Test
passed #36662
ubuntu-16.04

00:05:57

passed #36663
ubuntu-17.10

00:05:39

passed #36664
ubuntu-18.04

00:05:32