fix(security): correct exporter config — timeout, field name, CA

- Increase vuls_server timeout from 30s to 5m — 30s is too short for
  large package sets (786+ packages), causing premature scan failures.
- Rename push_interval to scan_interval — matches the actual config
  field name expected by the exporter binary.
- Remove ca_file (Puppet CA) — it replaced the system cert pool instead
  of appending to it, breaking server cert verification when the Vuls
  server uses a public CA.

Author: ashish1099

modules/enableit/common/manifests/monitor/exporter/security.pp

@@ -90,13 +90,12 @@
     content => stdlib::to_yaml({
       'vuls_server'     => {
         'url'       => $vuls_server_url,
-        'timeout'   => '30s',
+        'timeout'   => '5m',
         'cert_file' => "/etc/puppetlabs/puppet/ssl/certs/${host}.pem",
         'key_file'  => "/etc/puppetlabs/puppet/ssl/private_keys/${host}.pem",
-        'ca_file'   => '/etc/puppetlabs/puppet/ssl/certs/ca.pem',
       },
       'listen_address'  => "${listen_host}:${listen_port}",
-      'push_interval'   => '12h',
+      'scan_interval'   => '12h',
     }),
     notify  => Service["${service_name}.service"],
   }