Include who-broke-the-build information in notification emails

Signed-off-by: Shea Levy <shea@shealevy.com>

src/lib/Hydra/Plugin/EmailNotification.pm

@@ -29,6 +29,11 @@ The following dependent jobs also failed:
 [% END -%]
 
 [% END -%]
+
+[% IF nrCommits > 0 -%]
+This is likely due to [% IF nrCommits > 1 -%][% nrCommits %] commits by [% END -%][% authorList %].
+[% END -%]
+
 [% IF build.buildstatus == 0 -%]
 Yay!
 [% ELSE -%]
@@ -74,6 +79,13 @@ sub buildFinished {
         }
     }
 
+    my ($authors, $nrCommits) = getResponsibleAuthors($build, $self->{plugins});
+    my $authorList;
+    if (scalar keys %{authors} > 0) {
+        my @x = map { "$_ <$authors->{$_}>" } (sort keys %{$authors});
+        $authorList = join(" or ", scalar @x > 1 ? join(", ", @[0..scalar @x - 2]): (), $x[-1]);
+    }
+
     # Send an email to each interested address.
     # !!! should use the Template Toolkit here.
 
@@ -89,6 +101,8 @@ sub buildFinished {
             , baseurl => $self->{config}->{'base_uri'} || "http://localhost:3000"
             , showJobName => \&showJobName, showStatus => \&showStatus
             , showSystem => index($build->job->name, $build->system) == -1
+            , nrCommits => $nrCommits
+            , authorList => $authorList
             };
 
         my $body;