Comment 0 for bug 2060172

In 3.5 I got a run where the snap has started but no UI was available. After checking in the maas-log, I found

```
Apr 04 03:50:31 maas-ha-1 maas-log[129195]: maas.service_monitor: [error] Service 'reverse_proxy' failed to restart: Pebble change 3 failed with an error: cannot perform the following tasks:#012- Stop service "http" (cannot stop service while starting)
```

Also, the pebble services seems to be running but still no http endpoints are available

```
# pebble services
Service Startup Current Since
agent disabled inactive -
apiserver enabled active today at 03:50 UTC
bind9 disabled active today at 03:50 UTC
dhcpd disabled inactive -
dhcpd6 disabled inactive -
http disabled active today at 03:50 UTC
ntp disabled active today at 03:50 UTC
proxy disabled active today at 03:50 UTC
rackd enabled active today at 03:50 UTC
regiond enabled active today at 03:50 UTC
syslog disabled active today at 03:50 UTC
temporal disabled active today at 03:50 UTC
temporal-worker disabled active today at 03:50 UTC
```