Bump libptero-perl to 0.4.7.

[tmooney]

This incorporates the changes from genome/ptero-perl-sdk#117.

It installs!

$ apt-cache policy libptero-perl
libptero-perl:
  Installed: 0.4.7-1
  Candidate: 0.4.7-2
  Version table:
     0.4.7-2 0
       1001 http://repo.gsc.wustl.edu/ubuntu/ lucid-genome-development/main Packages
 *** 0.4.7-1 0
        100 /var/lib/dpkg/status
$ sudo apt-get install libptero-perl
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages will be upgraded:
  libptero-perl
1 upgraded, 0 newly installed, 0 to remove and 271 not upgraded.
Need to get 37.0kB of archives.
After this operation, 0B of additional disk space will be used.
WARNING: The following packages cannot be authenticated!
  libptero-perl
Authentication warning overridden.
Get:1 http://repo.gsc.wustl.edu/ubuntu/ lucid-genome-development/main libptero-perl 0.4.7-2 [37.0kB]
Fetched 37.0kB in 0s (0B/s)          
(Reading database ... 574684 files and directories currently installed.)
Preparing to replace libptero-perl 0.4.7-1 (using .../libptero-perl_0.4.7-2_all.deb) ...
Unpacking replacement libptero-perl ...
Processing triggers for man-db ...
Setting up libptero-perl (0.4.7-2) ...
$ apt-cache policy libptero-perl
libptero-perl:
  Installed: 0.4.7-2
  Candidate: 0.4.7-2
  Version table:
 *** 0.4.7-2 0
       1001 http://repo.gsc.wustl.edu/ubuntu/ lucid-genome-development/main Packages
        100 /var/lib/dpkg/status
$ grep '$VERSION' /usr/share/perl5/Ptero.pm 
our $VERSION = "0.4.7";

It runs!

$ ptero-glance http://workflow.apipe-deis.gsc.wustl.edu/v1/workflows/843916
                     STATUS SUMMARY      TYPE  NAME
                           canceled  Workflow  51ac560c72fa47bf9ce01937f9275d9a Single Sample Genotype Pipeline
                          succeeded      Task  . set status Running
                          succeeded       Job  . . set status Running
                           canceled      Task  . 51ac560c72fa47bf9ce01937f9275d9a Single Sample Genotype Pipeline
                           canceled       DAG  . . 51ac560c72fa47bf9ce01937f9275d9a Single Sample Genotype Pipeline
                           canceled      Task  . . . Alignment
                             failed       Job  . . . . shortcut
                          succeeded       Job  . . . . execute
                                         Task  . . . HaplotypeCaller [parallel-by: bucket]
                                          Job  . . . . shortcut
                                          Job  . . . . execute
                                         Task  . . . QC
                                          Job  . . . . shortcut
                                          Job  . . . . execute
                                          Job  . . set status Crashed
                                         Task  . set status Succeeded
                                          Job  . . set status Succeeded