Orbital: Fix warning
Orbital: Fix warning

Fixed warning on orbital that required initialization of instance variable `@use_secondary_url`

Unit:
5213 tests, 75897 assertions, 0 failures, 0 errors, 0 pendings, 0 omissions, 0 notifications
100% passed

Rubocop:
743 files inspected, no offenses detected

Remote:
119 tests, 497 assertions, 0 failures, 0 errors, 0 pendings, 0 omissions, 0 notifications
100% passed

Closes #4458

vanboom/active_merchant,varyonic/active_merchant,activemerchant/active_merchant,vampirechicken/active_merchant