use warnings;
use strict;

my %atts;
my $att;
while (<DATA>) {
    chomp;
    $att = $1 if /^attribute:\s+(.+)/;
    $atts{$att} = $1 if /^value:\s+(.+)/;
}

use Data::Dumper;
$Data::Dumper::Sortkeys=1;
print Dumper(\%atts);

__DATA__
AVUs defined for dataObj 3a/73/2c/metadata.csv:
attribute: dcterms:created
value: 2014-08-13T00:00:10
units:
----
attribute: control
value: 0
units:
----
attribute: md5
value: 3a732cd0fddaa80fa65fcf28664eaf6d
units:
----