Interworking: Re-trigger scan if no connect attempt is done

Interworking: Re-trigger scan if no connect attempt is done

For one specific case when running with Interworking enabled the
re-initialisation of the scan timer is missing. This makes auto connect
to a configured network fail.

The case is:
- Interworking credentials available, but do not match
- Auto interworking is enabled (auto_interworking=1)
- Interworking auto select is disabled (i.e., this is from
  auto_interworking=1, not from INTERWORKING_SELECT auto)
- No configured (enabled and non blacklisted) networks are present
  in scan results list with full match
- Interworking finds matching networks (it does not do full security
  policy match)

This patch covers the case and re-initialises the scan timer to allow
search for a suitable network to continue.

Signed-off-by: Mikael Kanstrup <mikael.kanstrup@sonymobile.com>