qemu.tests: Update param "guest_alias" in configurations.

1. Win2008r2 is missing of param "guest_alias".
2. Fix the error of Win2008 guest_name.
3. Add Win2016 guest.
Signed-off-by: NCong Li <coli@redhat.com>

qemu/tests/cfg/single_driver_install.cfg

@@ -7,7 +7,7 @@
     need_uninstall = no
     driver_install_timeout = 600
     tmp_folder = C:\tmp
-    guest_alias = "Win7-32:w7\x86,Win7-64:w7\amd64,Win8-32:w8\x86,Win8-64:w8\amd64,Win8-32.1:w8.1\x86,Win8-64.1:w8.1\amd64,Win10-32:w10\x86,Win10-64:w10\amd64,Win2008-32:2k8\x86,Win2008-64:2k8\amd64,Win2012-64:2k12\amd64,Win2012-64r2:2k12R2\amd64"
+    guest_alias = "Win7-32:w7\x86,Win7-64:w7\amd64,Win8-32:w8\x86,Win8-64:w8\amd64,Win8-32.1:w8.1\x86,Win8-64.1:w8.1\amd64,Win10-32:w10\x86,Win10-64:w10\amd64,Win2008-sp2-32:2k8\x86,Win2008-sp2-64:2k8\amd64,Win2008-r2-64:2k8R2\amd64,Win2012-64:2k12\amd64,Win2012-64r2:2k12R2\amd64,Win2016-64:2k16\amd64"
     driver_install_cmd = "python WIN_UTILS:\win_driver_install.py %s %s %s %s %s"
     show_file_ext_cmd = "reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced /v HideFileExt /t REG_DWORD /d 0 /f"
     variants:

qemu/tests/cfg/win_virtio_driver_update_test.cfg

@@ -14,7 +14,7 @@
     driver_install_timeout = 600
     suppress_exception = no
     tmp_folder = C:\tmp
-    guest_alias = "Win7-32:w7\x86,Win7-64:w7\amd64,Win8-32:w8\x86,Win8-64:w8\amd64,Win8-32.1:w8.1\x86,Win8-64.1:w8.1\amd64,Win10-32:w10\x86,Win10-64:w10\amd64,Win2008-32:2k8\x86,Win2008-64:2k8\amd64,Win2012-64:2k12\amd64,Win2012-64r2:2k12R2\amd64"
+    guest_alias = "Win7-32:w7\x86,Win7-64:w7\amd64,Win8-32:w8\x86,Win8-64:w8\amd64,Win8-32.1:w8.1\x86,Win8-64.1:w8.1\amd64,Win10-32:w10\x86,Win10-64:w10\amd64,Win2008-sp2-32:2k8\x86,Win2008-sp2-64:2k8\amd64,Win2008-r2-64:2k8R2\amd64,Win2012-64:2k12\amd64,Win2012-64r2:2k12R2\amd64,Win2016-64:2k16\amd64"
     driver_install_cmd = "python WIN_UTILS:\win_driver_install.py %s %s %s %s %s"
     show_file_ext_cmd = "reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced /v HideFileExt /t REG_DWORD /d 0 /f"
     read_rng_cmd  = "X:\random_%PROCESSOR_ARCHITECTURE%.exe"