[Zesty] missing dnsmasq-base package breaks NetworkManager connection sharing feature

Network settings in Zesty allow users to define a connection as "Shared to other computers", this does not currently work in Ubuntu MATE 17.04 Beta 2 at least for wired connections.

The reason, from the logs is that dnsmasq binary is not present:

[...]
Apr 11 20:37:22 Edge NetworkManager[946]: <info> [1491935842.1052] Executing: /sbin/iptables --table nat --insert POSTROUTING --source 10.42.0.0/255.255.255.0 ! --destination 10.42.0.0/255.255.255.0 --jump MASQUERADE
Apr 11 20:37:22 Edge NetworkManager[946]: <error> [1491935842.1117] device (enp1s0f2): share: (enp1s0f2) failed to start dnsmasq: Could not find "dnsmasq" binary
Apr 11 20:37:22 Edge NetworkManager[946]: <info> [1491935842.1119] Executing: /sbin/iptables --table nat --delete POSTROUTING --source 10.42.0.0/255.
[...]

The way to setup a (wired) connection sharing is as follow:

- Go to Network Connection settings and select the wired connection
- Under [IPv4 Settings -> Method] select "Shared to other computers"

ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: ubuntu-mate-core 1.190
ProcVersionSignature: Ubuntu 4.10.0-19.21-generic 4.10.8
Uname: Linux 4.10.0-19-generic x86_64
ApportVersion: 2.20.4-0ubuntu4
Architecture: amd64
CurrentDesktop: MATE
Date: Tue Apr 11 20:39:44 2017
InstallationDate: Installed on 2017-04-05 (6 days ago)
InstallationMedia: Ubuntu-MATE 17.04 "Zesty Zapus" - Beta amd64 (20170321.1)
SourcePackage: ubuntu-mate-meta
UpgradeStatus: No upgrade log present (probably fresh install)