Use v2 API for creating new lndhub accounts

spec/services/create_account_spec.rb

@@ -93,7 +93,7 @@ RSpec.describe CreateAccount, type: :model do
     end
   end
 
-  describe "#create_lndhub_wallet" do
+  describe "#create_lndhub_account" do
     include ActiveJob::TestHelper
 
     let(:service) { CreateAccount.new(
@@ -102,8 +102,8 @@ RSpec.describe CreateAccount, type: :model do
     )}
     let(:new_user) { create :user, cn: "halfinney", ou: "kosmos.org" }
 
-    it "enqueues a job to create an LndHub wallet" do
-      service.send(:create_lndhub_wallet, new_user)
+    it "enqueues a job to create an LndHub account" do
+      service.send(:create_lndhub_account, new_user)
 
       expect(enqueued_jobs.size).to eq(1)