[CAD-2181] All queries that don't return anything should return 404

[ksaric]

https://jira.iohk.io/browse/CAD-736

Also fixed the failing tests.

[ksaric]

bors try

[iohk-bors]

try

Build succeeded:

• buildkite/smash
• ci/hydra-eval
• ci/hydra-build:required

[ArturWieczorek]

Looks good to me.

curl --verbose --header "Content-Type: application/json" --request GET http://localhost:3100/api/v1/i_dont_exist
Note: Unnecessary use of -X or --request, GET is already inferred.

• Trying 127.0.0.1...
• TCP_NODELAY set
• Connected to localhost (127.0.0.1) port 3100 (#0)

GET /api/v1/i_dont_exist HTTP/1.1
Host: localhost:3100
User-Agent: curl/7.58.0
Accept: /
Content-Type: application/json

< HTTP/1.1 404 Not Found
< Transfer-Encoding: chunked
< Date: Mon, 14 Dec 2020 14:21:50 GMT
< Server: Warp/3.3.13
<

• Connection #0 to host localhost left intact

curl --verbose --header "Content-Type: application/json" --request GET http://localhost:3100/api/v2/delist
Note: Unnecessary use of -X or --request, GET is already inferred.

• Trying 127.0.0.1...
• TCP_NODELAY set
• Connected to localhost (127.0.0.1) port 3100 (#0)

GET /api/v2/delist HTTP/1.1
Host: localhost:3100
User-Agent: curl/7.58.0
Accept: /
Content-Type: application/json

< HTTP/1.1 404 Not Found
< Transfer-Encoding: chunked
< Date: Mon, 14 Dec 2020 14:22:04 GMT
< Server: Warp/3.3.13
<

• Connection #0 to host localhost left intact