ZF-5275: Add new attributes to yt:statistics extension

Description

[_extensionAttributes:protected] => Array ( [videoWatchCount] => Array ( [namespaceUri] => [name] => videoWatchCount [value] => 14 )

        [lastWebAccess] => Array
            (
                [namespaceUri] => 
                [name] => lastWebAccess
                [value] => 2008-12-15T14:56:57.000-08:00
            )

    )

Comments

Bumping to priority: major.

Fixed in r14214, merged to 1-7 in r14215.