maint: ignore new test executable

* tests/.gitignore: Sort, and add sockettest.

tests/.gitignore

@@ -1,35 +1,34 @@
-Makefile
+*.exe
-Makefile.in
 .deps
 .libs
-sexpr2xmltest
-xml2sexprtest
-virshtest
 conftest
-reconnect
+esxutilstest
-xmconfigtest
+eventtest
-xencapstest
+interfacexml2xmltest
-qemuxml2xmltest
-qemuxml2argvtest
-qemuargv2xmltest
-qemuhelptest
 networkxml2xmltest
 nodedevxml2xmltest
-interfacexml2xmltest
-storagevolxml2xmltest
-storagepoolxml2xmltest
 nodeinfotest
-statstest
-qparamtest
-virbuftest
-seclabeltest
-eventtest
-*.exe
 object-locking
+object-locking-files.txt
 object-locking.cmi
 object-locking.cmx
-object-locking-files.txt
+qemuargv2xmltest
-esxutilstest
+qemuhelptest
-vmx2xmltest
+qemuxml2argvtest
-xml2vmxtest
+qemuxml2xmltest
+qparamtest
+reconnect
 secaatest
+seclabeltest
+sexpr2xmltest
+sockettest
+statstest
+storagepoolxml2xmltest
+storagevolxml2xmltest
+virbuftest
+virshtest
+vmx2xmltest
+xencapstest
+xmconfigtest
+xml2sexprtest
+xml2vmxtest