dxns bond module test (#4)

* WIP : added bond module tx and query cli commands

* added bond module invariant

* update the go.mod

* addressed the pr changes

* update to proto files

* refactor: move the proto package version from `v1` to `v1beta1` for vulcanize modules

* WIP : addin the unit test scripts to bond module

* refactor: refactored the test cases for bond module

* refactor: refactored the bond module test cases
1. refactored grpc gateway  endpoints of bond module
2. added test cases to cli query , cli tx and grpc end points

* addressed the pr comments
1. changed query-by-owner to by-owner in cli cmd
2. changed bonds-by-owner route to by-owner in bond module

app/test_helpers.go

@@ -2,6 +2,8 @@ package app
 
 import (
 	"encoding/json"
+	"github.com/cosmos/cosmos-sdk/crypto/keys/ed25519"
+	sdk "github.com/cosmos/cosmos-sdk/types"
 	"time"
 
 	"github.com/cosmos/cosmos-sdk/simapp"
@@ -58,3 +60,15 @@ func Setup(isCheckTx bool) *EthermintApp {
 
 	return app
 }
+
+// CreateRandomAccounts will generate random accounts
+func CreateRandomAccounts(accNum int) []sdk.AccAddress {
+	// createRandomAccounts is a strategy used by addTestAddrs() in order to generated addresses in random order.
+	testAddrs := make([]sdk.AccAddress, accNum)
+	for i := 0; i < accNum; i++ {
+		pk := ed25519.GenPrivKey().PubKey()
+		testAddrs[i] = sdk.AccAddress(pk.Address())
+	}
+
+	return testAddrs
+}