[Merge] lp:~phablet-team/indicator-network/fix-nm1.2-hotspot into lp:indicator-network

[Tony Espy]

Tony Espy has proposed merging lp:~phablet-team/indicator-network/fix-nm1.2-hotspot into lp:indicator-network.

Requested reviews:
  Pete Woods (pete-woods)

For more details, see:
https://code.launchpad.net/~phablet-team/indicator-network/fix-nm1.2-hotspot/+merge/293322

This change updates the hotspot code to not include ipv4 settings which have empty values.

This fixes an issue with NetworkManager 1.2 which rejects an improperly specified ipv4.dns value:

void nmofono::HotspotManager::Priv::addConnection() Adding new hotspot connection
Failed to add connection:  "ipv4.dns: can't set property of type 'au' from value of type 'as'"

-- 
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