Allow localhost as ip address, fix valid port function

:Release Notes:
Allow localhost as ip address, fix valid port function

:Detailed Notes:
Allow localhost as ip address, update valid port funtion for ares-setup-device cli

:Testing Performed:
1. Checked CLI unit test on OSE(rpi4)
2. Checked CLI unit test on OSE Emulator
3. Checked eslint
4. Check ares-setup-device using below command
   - $ares-setup-device > add/modify emulator ip as localhost
    > success
   - $ares-shel -d emulator
    > success

:Issues Addressed:
[WRQ-15468] [CLI-common] allow localhost as ip address, fix valid port function

lib/base/setup-device.js

@@ -46,11 +46,12 @@ const async = require('async'),
     }
 
     function isValidIpv4(host) {
-        return host.match(/^(\d|[1-9]\d|1\d\d|2([0-4]\d|5[0-5]))\.(\d|[1-9]\d|1\d\d|2([0-4]\d|5[0-5]))\.(\d|[1-9]\d|1\d\d|2([0-4]\d|5[0-5]))\.(\d|[1-9]\d|1\d\d|2([0-4]\d|5[0-5]))$/);
+        return host === "localhost" ||  host.match(/^(\d|[1-9]\d|1\d\d|2([0-4]\d|5[0-5]))\.(\d|[1-9]\d|1\d\d|2([0-4]\d|5[0-5]))\.(\d|[1-9]\d|1\d\d|2([0-4]\d|5[0-5]))\.(\d|[1-9]\d|1\d\d|2([0-4]\d|5[0-5]))$/);
     }
 
     function isValidPort(port) {
-        return String(port).match(/^[0-9]+$/);
+        const intPort = Number(port);
+        return Number.isInteger(intPort) && intPort > 0 && intPort <= 65535;
     }
 
     devicetools.showDeviceList = function(next) {