Documenting/adding an entitlement to Entitlements-Release.plist

[faugusztin]

Adding a card to Apple Wallet can be tested only via TestFlight (minimum supported iOS version for those builds also needs to be iOS 10.3 or higher), which requires a production build with a specific entitlement in both provisioning profile and in Entitlements-Release.plist.

The entitlement can be added using following code:

<config-file target="Entitlements-Release.plist" parent="com.apple.developer.payment-pass-provisioning" mode="add">
  <true />
</config-file>

Adding this entitlement to *-Debug.plist would cause build to fail, as the debug provisioning profile won't have the corresponding entitlement item (this item can be enabled only manually by Apple, and they do it only for App Store distirbution provisioning profile).

This block of code can be added either to the plugin.xml (of the plugin) or to config.xml (of the project using this plugin; in this case the requirement for modification of config.xml needs to be added to the documentation.