Autotest: rename sub tests from "test" to something meaningful

Otherwise, if I open tests/auto/dbus/dbus.pro in Qt Creator, it shows me
"test", "test2", "test3", "test4" and it's very hard to know which test
is which.

Change-Id: Iee8cbc07c4434ce9b560ffff13d0654696c025b7
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@theqtcompany.com>

tests/auto/dbus/qdbusabstractadaptor/qdbusabstractadaptor.pro

@@ -3,4 +3,4 @@ TARGET = tst_qdbusabstractadaptor
 QT = core core-private testlib
 TEMPLATE = subdirs
 CONFIG += ordered
-SUBDIRS = qmyserver test
+SUBDIRS = qmyserver qdbusabstractadaptor

tests/auto/dbus/qdbusabstractinterface/qdbusabstractinterface.pro

@@ -2,5 +2,5 @@ CONFIG += testcase
 TARGET = tst_qdbusabstractinterface
 TEMPLATE = subdirs
 CONFIG += ordered
-SUBDIRS = qpinger test
+SUBDIRS = qpinger qdbusabstractinterface
 OTHER_FILES += org.qtproject.QtDBus.Pinger.xml

tests/auto/dbus/qdbusinterface/qdbusinterface.pro

@@ -3,4 +3,4 @@ TARGET = tst_qdbusinterface
 QT = core testlib
 TEMPLATE = subdirs
 CONFIG += ordered
-SUBDIRS = qmyserver test
+SUBDIRS = qmyserver qdbusinterface

tests/auto/dbus/qdbusmarshall/qdbusmarshall.pro

@@ -2,7 +2,7 @@ CONFIG += testcase
 TARGET = tst_qdbusmarshall
 TEMPLATE = subdirs
 CONFIG += ordered
-SUBDIRS = qpong test
+SUBDIRS = qpong qdbusmarshall
 
 QT = core-private testlib