Move dnsmasq install into appropriate elements.

It was conflated with nova-compute, but it's really a networking
problem.

Change-Id: Ic67f48b55b079ae2ea845dcc19a0275522a9823a

elements/bm-dnsmasq/install.d/81-bm-dnsmasq

@@ -1,6 +1,8 @@
 #!/bin/bash
 set -eux
 
+install-packages dnsmasq dnsmasq-utils
+
 function install_dnsmasq_upstart {
   cat > /etc/init/nova-bm-dnsmasq.conf << eof
 start on runlevel [2345]

elements/neutron-dhcp-agent/install.d/80-neutron-dhcp-agent

@@ -1,4 +1,6 @@
 #!/bin/bash
 set -eux
 
+install-packages dnsmasq dnsmasq-utils
+
 os-svc-daemon -n neutron-dhcp-agent -u neutron -c neutron-dhcp-agent -- --config-file /etc/neutron/dhcp_agent.ini --config-dir /etc/neutron

elements/nova-compute/install.d/80-nova-compute

@@ -2,7 +2,7 @@
 set -eux
 
 # Used by all compute
-install-packages dnsmasq dnsmasq-utils ebtables qemu-utils syslinux
+install-packages ebtables qemu-utils syslinux
 
 # LIBVIRT_DEFAULT_URI needs to be set due to
 # https://bugs.launchpad.net/tripleo/+bug/1226310