Dynamic amount in unroll closure (#173)

* update UnrollClosure

* update TrustedOnboarding flow + add TrustedOnboarding e2e test

* fix linter: grpc.Dial

* add comment

* integration tests: faucet the ASP with 2 utxos

server/test/e2e/utils.go

@@ -31,6 +31,10 @@ type arkReceive struct {
 	Onchain  string `json:"onchain_address"`
 }
 
+type arkTrustedOnboard struct {
+	OnboardAddress string `json:"onboard_address"`
+}
+
 func runOceanCommand(arg ...string) (string, error) {
 	args := append([]string{"exec", "oceand", "ocean"}, arg...)
 	return runCommand("docker", args...)