Add support for custom bridge tokens in bidirectional CCIP test setup

[kidambisrinivas]

Motivation

• Support for custom ERC20 bridge tokens to be used in CCIP integration tests

Solution

• Add a list of blockchain.ContractDeployer in the CCIPDefaultTestSetUp function to be used for deploying token contracts during lane setup. Call chain:
  • AddLanesForNetworkPair
  • lane.DeployNewCCIPLane
  • sourceLane.DeployContracts and destLane.DeployContracts
  • CCIPCommon.DeployContracts
  • ContractDeployer.DeployLinkTokenContract
• The same list of ERC20 tokens are deployed on both the forward and reverse lanes, in the case of bidirectional lane setup

Test Plan

$ cd integration-tests
$ make build_docker_image image=chainlink_ccip tag=local_dev
$ make test_smoke_ccip_simulated_local image=chainlink_ccip tag=local_dev
...
16:49:12.03 INF Phase Stats for Lane 2337 To 1337 Average Duration for Successful Requests=107.00 Lane=dest-chain-->source-chain Max Duration for Successful Requests=107.0
0 Min Duration for Successful Requests=107.00 Phase=Commit-ReportAccepted Successful Count=1 env=
16:49:12.03 INF Phase Stats for Lane 2337 To 1337 Lane=dest-chain-->source-chain Phase=ReportBlessedByARM env=
16:49:12.03 INF Phase Stats for Lane 2337 To 1337 Average Duration for Successful Requests=30.00 Lane=dest-chain-->source-chain Max Duration for Successful Requests=30.00
Min Duration for Successful Requests=30.00 Phase=ExecutionStateChanged Successful Count=1 env=
--- PASS: TestSmokeCCIPForBidirectionalLane (179.65s)
    --- PASS: TestSmokeCCIPForBidirectionalLane/CCIP_message_transfer_from_network_source-chain_to_network_dest-chain (137.55s)
    --- PASS: TestSmokeCCIPForBidirectionalLane/CCIP_message_transfer_from_network_dest-chain_to_network_source-chain (139.54s)
PASS
ok      github.com/smartcontractkit/chainlink/integration-tests/smoke   320.506s