MT#62180 /api/subscribers prevent subscribers from POST/DELETE

* regular subscribers should not be able to use POST as they are
  not allowed to create other subscribers, nor other PBX groups.
  resource.
* they should not be able to use DELETE as they cannot delete themselves
  nor other subscribers, nor PBX groups.

Change-Id: Idaacb344b65ff8c5da9f4c3649a9b4089938a82c
(cherry picked from commit 4eace822b5)

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

@@ -18,14 +18,17 @@ use NGCP::Panel::Utils::ProfilePackages qw();
 use NGCP::Panel::Utils::Events qw();
 use UUID;
 
-__PACKAGE__->set_config({
-    allowed_roles => [qw/admin reseller ccareadmin ccare subscriberadmin subscriber/],
-});
-
 sub allowed_methods{
     return [qw/GET POST OPTIONS HEAD/];
 }
 
+__PACKAGE__->set_config({
+    allowed_roles => {
+        Default => [qw/admin reseller ccareadmin ccare subscriberadmin subscriber/],
+        POST    => [qw/admin reseller ccareadmin ccare subscriberadmin/],
+    }
+});
+
 sub api_description {
     return 'Defines an actual user who can log into the web panel, register devices via SIP and/or '.
         'XMPP and place and receive calls via SIP. A subscriber always belongs to a '.

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

@@ -24,6 +24,7 @@ use parent qw/NGCP::Panel::Role::EntitiesItem NGCP::Panel::Role::API::Subscriber
 __PACKAGE__->set_config({
     allowed_roles => {
         Default => [qw/admin reseller ccareadmin ccare subscriberadmin subscriber/],
+        DELETE  => [qw/admin reseller ccareadmin ccare subscriberadmin/],
         Journal => [qw/admin reseller ccareadmin ccare/],
     }
 });