Introduced new functionality to add domains to cartridge subscriptions
Adding SubscriptionDomainRequest.java
Revert "Adding SubscriptionDomainRequest.java"

This reverts commit 33471692bce9f0cd927705db03839fe8cd2d4e12.
Revert "Introduced new functionality to add domains to cartridge subscriptions"

This reverts commit 6c34420de9aca70f8282ddff3d59fd56c1ece4bb.