(REF) CRM_Queue_Queue_* - Retain a copy of $queueSpec

[totten]

Overview

Queue objects are constructed with an array-based specification ($queueSpec). This patch prepares for defining and using more queue-level properties.

Before

Suppose you want to define a queue-level property like retry_interval. It would make sense to add this to the queue-spec:

$queue = CRM_Queue_Service::singleton()->create([
  'name' => 'foo',
  'type' => 'bar',
  'retry_interval' => 600,
]);

However, the retry_interval would be forgotten - so when it came to time to schedule a retry, the value is unavailable.

After

You can get any field from the $queueSpec, eg

$queue->getSpec('retry_interval');

[civibot]

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