Policy:perms
REGEXP:image.([0-9]+).([0-9]+)
OWNER:ANY
GROUP:ANY
VSNAME:dyn{2}{1}
VSOWNER:root
Use of uninitialized value $vsowner in concatenation (.) or string at 
+./getconf line 395.
foo
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The first time through the outer foreach loop /filter_name =\s+(.*)/ matches so it goes through the inner loop where /REGEXP =\s+(.*)/ and then /OWNER =\s+(.*)/ and then /GROUP =\s+(.*)/ match in turn.

The second time through the outer foreach loop /vs_name =\s+(.*)/ matches.

The third time through the outer foreach loop /vs_owner =\s+(.*)/ matches.

Because of the way you capture the variable data, if the outer loop iterates again the regular expressions will not match and the variable $vsowner will cleared (set to undef).

Change each if/elsif expression from:

if ( ( $variable ) = /pattern (.*)/ ) {
[download]

To:

if ( /pattern (.*)/ ) {
    $variable = $1;
[download]