Add Serialize key to payment_processor field for Event & Contribution Page

[eileenmcnaughton]

Overview

Minor code simplification - use metadata rather than code handling to save array of processors

Before

$params['payment_processor'] = implode(CRM_Core_DAO::VALUE_SEPARATOR, array_keys($params['payment_processor']));

After

Key defined

'serialize' => self::SERIALIZE_SEPARATOR_TRIMMED,

Technical Details

The DAO can handle arrays if it knows the format now...

Comments

I tested saving in both forms after making this change. However, the string still 'works' if another code place is passinng it in

[civibot]

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[seamuslee001]

I'm happy if the tests are