TT#180551 /api/topuplogs add filter by customer_id

* customer_id filter is now possible, which behaves the same as the
  existing contract_id. This is to add consistency as filtering by
  customer_id is available in other endpoints

Change-Id: I1577d06133f9629c363940a4e8d2fb8012336e21

lib/NGCP/Panel/Controller/API/TopupLogs.pm

@@ -70,7 +70,7 @@ sub query_params {
                 },
                 second => sub { },
             },
-        },        
+        },
         {
             param => 'contract_id',
             description => 'Filter for top-up requests of a specific customer contract.',
@@ -82,7 +82,18 @@ sub query_params {
                 second => sub {},
             },
         },
-       {
+        {
+            param => 'customer_id',
+            description => 'Filter for top-up requests of a specific customer contract.',
+            query => {
+                first => sub {
+                    my $q = shift;
+                    return { 'me.contract_id' => $q };
+                },
+                second => sub {},
+            },
+        },
+        {
             param => 'subscriber_id',
             description => 'Filter for top-up requests of a specific subscriber.',
             query => {
@@ -93,7 +104,7 @@ sub query_params {
                 second => sub {},
             },
         },
-       {
+        {
             param => 'voucher_id',
             description => 'Filter for top-up requests with a specific voucher.',
             query => {

lib/NGCP/Panel/Role/API/TopupLogs.pm

@@ -17,7 +17,7 @@ sub _item_rs {
 
     my $item_rs = $c->model('DB')->resultset('topup_logs');
     if($c->user->roles eq "admin") {
-    } elsif($c->user->roles eq "reseller") {
+    } elsif ($c->user->roles eq "reseller") {
         $item_rs = $item_rs->search({
             'contact.reseller_id' => $c->user->reseller_id,
         },{