Implement e2e testing

[dutterbutter]

Implementation details

Implement e2e testing to ensure everything works collectively (e.g. register assets, oracle setup, adding/depositing/withdrawing assets).

Testing details

Acceptance Criteria

[clearloop]

• asset-depository ( no calls )
• asset-index
  • The add/remove asset currently are not completed
• committee
• local-treasury
• price-feed
• remote-asset-manager
• saft-registry
• xcm-asset-support