Add retry attempts configuration value for Otto to retry paypal

ECOM-5891

playbooks/roles/ecommerce/defaults/main.yml

@@ -88,6 +88,7 @@ ECOMMERCE_PAYPAL_CLIENT_SECRET: 'SET-ME-PLEASE'
 ECOMMERCE_PAYPAL_RECEIPT_URL: '{{ ECOMMERCE_LMS_URL_ROOT }}/commerce/checkout/receipt/'
 ECOMMERCE_PAYPAL_CANCEL_URL: '{{ ECOMMERCE_LMS_URL_ROOT }}/commerce/checkout/cancel/'
 ECOMMERCE_PAYPAL_ERROR_URL: '{{ ECOMMERCE_LMS_URL_ROOT }}/commerce/checkout/error/'
+ECOMMERCE_PAYPAL_RETRY_ATTEMPTS: 3
 
 ECOMMERCE_PAYMENT_PROCESSOR_CONFIG:
   edx:
@@ -108,6 +109,7 @@ ECOMMERCE_PAYMENT_PROCESSOR_CONFIG:
       receipt_url: '{{ ECOMMERCE_PAYPAL_RECEIPT_URL }}'
       cancel_url: '{{ ECOMMERCE_PAYPAL_CANCEL_URL }}'
       error_url: '{{ ECOMMERCE_PAYPAL_ERROR_URL }}'
+      retry_attempts: '{{ ECOMMERCE_PAYPAL_RETRY_ATTEMPTS }}'
 
 # Theming
 ECOMMERCE_PLATFORM_NAME: 'Your Platform Name Here'