gitutil: use BuildKit urlutil.RedactCredentials for remote URLs

Signed-off-by: CrazyMax <1951866+crazy-max@users.noreply.github.com>

vendor/github.com/moby/buildkit/util/urlutil/redact.go

@@ -0,0 +1,33 @@
+package urlutil
+
+import (
+	"net/url"
+)
+
+const mask = "xxxxx"
+
+// RedactCredentials takes a URL and redacts username and password from it.
+// e.g. "https://user:password@host.tld/path.git" will be changed to
+// "https://xxxxx:xxxxx@host.tld/path.git".
+func RedactCredentials(s string) string {
+	ru, err := url.Parse(s)
+	if err != nil {
+		return s // string is not a URL, just return it
+	}
+	var (
+		hasUsername bool
+		hasPassword bool
+	)
+	if ru.User != nil {
+		hasUsername = len(ru.User.Username()) > 0
+		_, hasPassword = ru.User.Password()
+	}
+	if hasUsername && hasPassword {
+		ru.User = url.UserPassword(mask, mask)
+	} else if hasUsername {
+		ru.User = url.User(mask)
+	} else if hasPassword {
+		ru.User = url.UserPassword(ru.User.Username(), mask)
+	}
+	return ru.String()
+}