[DOC] SCIM2 multi attribute filtering is not properly documented.

[somindatommy]

Multi attribute filtering is allowed in SCIM user endpoint. This needs to be documented. While doing so it needs to be mentioned that multi attribute filtering is only supported for single domain filtering and if the domain is not specified in the request, filter will search only in the primary users store.

Available documentation for SCIM: [1]

Sample request:
curl -v -k --user admin:admin 'https://localhost:9443/scim2/Users?filter=userName+sw+s+and+groups+ew+1&domain=primary

[1] - https://docs.wso2.com/display/IS570/apidocs/SCIM2-endpoints/index.html#!/operations#UsersEndpoint#getUser