(root@sw17152) .ssh > ls -la
total 24
drwxr-xr-x 2 root root 4096 May 25 07:07 ./
drwxr-xr-x 7 root root 4096 May 25 07:10 ../
-rw------- 1 root root 5280 May 24 20:54 authorized_keys2_bak

(root@sw17152) .ssh > cat ../test.pp 
class 248_root_sshkey {    
  #- ensure link for authorized_keys and authorized_keys2 exists
  #file { "/root/.ssh/authorized_keys": ensure => "/root/.ssh/authorized_keys2" }    

  ssh_authorized_key { "bbartlett@zynga.com":
    key => "BLAHBLAH",        
    name => "bbartlett@zynga.com",        
    user => "root",
    type => ssh-dss,        
    target => authorized_keys2,        
    ensure => present,
  }
}

(root@sw17152) .ssh > puppet --trace --noop --debug ../test.pp 
debug: Creating default schedules
debug: Finishing transaction 23940485940020 with 0 changes

(root@sw17152) .ssh > ls -la
total 24
drwxr-xr-x 2 root root 4096 May 25 07:07 ./
drwxr-xr-x 7 root root 4096 May 25 07:10 ../
-rw------- 1 root root 5280 May 24 20:54 authorized_keys2_bak