decom ms5

RT #7100

apergos said:

"This host has not been used for thumbnail service in a long time. It
can be fully decommed."

so I'm removing the entire mount from there in nfs.pp... right?

remove from:
- dsh groups
- nfs.pp
- site.pp
- DHCP

Change-Id: I8530218e320364849d1ae1ccfd1cea7a18489e90
remove "statistics1" from DHCP

Change-Id: I2dd0a99ff047835446ca00343341f904ecfa34ac
Merge changes I2dd0a99f,I8530218e into production

* changes:
  remove "statistics1" from DHCP
  decom ms5