Use /bin/sh to start ldap server

ldaptest/ldap_server.go

@@ -49,9 +49,13 @@ ldap.port=%d
 `, config.Base, config.Base, config.Port)
 	defer tmpf.Close()
 
-	args := []string{tmpf.Name()}
+	args := []string{
+		filepath.Join(config.Dir, "unboundid-ldap-server/bin/unboundid-ldap-server"),
+		tmpf.Name(),
+	}
 	args = append(args, config.LDIFs...)
-	proc := exec.Command(filepath.Join(config.Dir, "unboundid-ldap-server/bin/unboundid-ldap-server"), args...)
+	// Use /bin/sh so that the script doesn't have to be executable.
+	proc := exec.Command("/bin/sh", args...)
 	proc.Stdout = os.Stdout
 	proc.Stderr = os.Stderr