Finish the integration test: login and user create wallet

[dadiorchen]

For a logged in user (got access key already), they should be able to create wallet under their account, by calling POST /wallets
Please write test to cover this workflow, it is okay to use postman or other to do the login and get the access token then do the post /wallets, but in the integration test, it is unnecessary to do it for real, just mock these outward request and focus on the internal business.

[shanmukhchowdary147]

I would like to work on this task

[dadiorchen]

@shanmukhchowdary147 please take another one, this is already assigned to volunteer, will add his name later

[shanmukhchowdary147]

Sure thanks for letting me know!

[dadiorchen]

I will combine this into the work @Kpoke is doing: migrate all test to new version adopting keycloak

[Kpoke]

#512 , deployed to the keycloak branch (/wallet/keycloak)