client: Use http.Client instead of a string for the socket

This converts the client and weldrcheck functions to use http.Client for
connections instead of passing around the socket path and opening it for
each test.

internal/client/weldr.go

@@ -4,10 +4,11 @@ package client
 
 import (
 	"encoding/json"
+	"net/http"
 )
 
 // GetStatusV0 makes a GET request to /api/status and returns the v0 response as a StatusResponseV0
-func GetStatusV0(socket string) (reply StatusV0, resp *APIResponse, err error) {
+func GetStatusV0(socket *http.Client) (reply StatusV0, resp *APIResponse, err error) {
 	body, resp, err := GetRaw(socket, "GET", "/api/status")
 	if resp != nil || err != nil {
 		return reply, resp, err