virsh: move version command to host group

Trivial patch, move version command to host commands group.

It has no any related with any domain.

It may connect to the daemon, so the flag is 0 but not VSH_CMD_FLAG_NOCONNECT.

tools/virsh.c

@@ -15641,7 +15641,6 @@ static const vshCmdDef domManagementCmds[] = {
     {"vcpucount", cmdVcpucount, opts_vcpucount, info_vcpucount, 0},
     {"vcpuinfo", cmdVcpuinfo, opts_vcpuinfo, info_vcpuinfo, 0},
     {"vcpupin", cmdVcpuPin, opts_vcpupin, info_vcpupin, 0},
-    {"version", cmdVersion, opts_version, info_version, 0},
     {"vncdisplay", cmdVNCDisplay, opts_vncdisplay, info_vncdisplay, 0},
     {NULL, NULL, NULL, NULL, 0}
 };
@@ -15856,6 +15855,7 @@ static const vshCmdDef hostAndHypervisorCmds[] = {
      info_qemu_monitor_command, 0},
     {"sysinfo", cmdSysinfo, NULL, info_sysinfo, 0},
     {"uri", cmdURI, NULL, info_uri, 0},
+    {"version", cmdVersion, opts_version, info_version, 0},
     {NULL, NULL, NULL, NULL, 0}
 };