Calyptos: Populate CLC /etc/hosts with midokura.midolman-host-mapping attributes

[dmccue]

From: #70 (comment)
midokura.midolman-host-mapping attributes

e.g.

  midolman-host-mapping:
      odc-f-09.prc.eucalyptus-systems.com: 10.105.10.51
      odc-f-31.prc.eucalyptus-systems.com: 10.105.10.73
      odc-f-36.prc.eucalyptus-systems.com: 10.105.10.78
      odc-d-30.prc.eucalyptus-systems.com: 10.105.1.209

equals

  ssh root@clc "
  echo '10.105.10.51 odc-f-09.prc.eucalyptus-systems.com
  10.105.10.73 odc-f-31.prc.eucalyptus-systems.com
  10.105.10.78 odc-f-36.prc.eucalyptus-systems.com
  10.105.1.209 odc-d-30.prc.eucalyptus-systems.com' >> /etc/hosts
  "