Update user store REST API to test connection for both JDBC and LDAP types

[isuruhettiarachchi]

Purpose

• Update test-connection user store REST API to support LDAP user store types.

Goals

Describe the solutions that this feature/fix will introduce to resolve the problems described above

Approach

Updated the yaml to accept a general request object for both JDBC and LDAP user store types. Updated the model keeping the previous variables to maintain backward compatibility.
Now test-connection API accepts a request body as below as well in addition to the previous request body.

{
    "typeId": "VW5pcXVlSURSZWFkT25seUxEQVBVc2VyU3RvcmVNYW5hZ2Vy",
    "properties": [
        {
            "name": "ConnectionURL",
            "value": "ldap://localhost:10390"
        },
        {
            "name": "ConnectionName",
            "value": "uid=admin,ou=system"
        },
        {
            "name": "ConnectionPassword",
            "value": "admin"
        }
    ]
}

Related PRs

Depends on the wso2/carbon-identity-framework#4230
Fixes wso2/product-is#1528