[yugaware-client] Support universe create in "aws", "azu", and "onprem" provider types

[tvesely]

Currently, universe creation fails with many providers due to incorrect storageType selection. For example, with AWS:

HTTP/1.1 400 Bad Request
Content-Length: 192
Connection: keep-alive
Content-Type: application/json
Date: Wed, 02 Nov 2022 22:18:55 GMT
Server: nginx/1.23.1
Trace-Id: 977299a55dc51531

{"success":false,"httpMethod":"POST","requestUri":"/api/v1/customers/11a78c93-1381-4d1d-8393-ba76f47ba7b6/universes/clusters","error":"storageType can't be empty for universe on aws provider"}