For DS connection tests to succeed it currently has to pass across all servers instead only on those using currently selected profile. 

Steps to reproduce:

1) unzip distribution 
2) start EAP domain
3) start other-server-group
4) navigate to web console -> datasources
5) pick full profile and DISABLE DefaultDS
6) switch to full-ha profile and test connection to DefaultDS DS


actual result: Test failed
expected result: Test was successful 

The problem is in the composite operation used to execute this test (Only the second step should be present in this case) -- see bellow. Because of this I am also concerned about the performance of this solution in large domains (10s of nodes, 100s of servers). 



Request
{
    "address" => [],
    "operation" => "composite",
    "steps" => [
        {
            "operation" => "test-connection-in-pool",
            "address" => [
                ("host" => "master"),
                ("server" => "server-one"),
                ("subsystem" => "datasources"),
                ("data-source" => "ExampleDS")
            ]
        },
        {
            "operation" => "test-connection-in-pool",
            "address" => [
                ("host" => "master"),
                ("server" => "server-three"),
                ("subsystem" => "datasources"),
                ("data-source" => "ExampleDS")
            ]
        },
        {
            "operation" => "test-connection-in-pool",
            "address" => [
                ("host" => "master"),
                ("server" => "server-two"),
                ("subsystem" => "datasources"),
                ("data-source" => "ExampleDS")
            ]
        }
    ]
}