Resource Server API allows curi mutation, it should not

[5r1n1]

• When a user adds a conduit, the curi is auto-generated
• This curi has to be internal and unique.
• Currently the update conduit function allows user to change the curi
• Update conduit API should be updated to ignore the curi input and should not update a conduit's curi

[kavithaii]

• Add a test in routes.test.js to check for curi immutability

[kavithaii]

• [x] Update in conduits.js verifies for curi in an api request
• [x] If curi exists sends response status 400
• [x] Test script added in routes.test.js to test the curi
  • should not allow curi to be updated by the service end point