Cannot connect to device socket when run debug with justlaunch

[miroslavaivanova]

There is an exception when you run debug with justlaunch

• CLI: 5.0.0-2018-10-29 - rc
• iOS Runtime: rc

Describe the bug

To Reproduce

1. tns debug ios --justlaunch
   exception:

    at Errors.fail (/usr/local/lib/node_modules/nativescript/lib/common/errors.js:125:28)
    at Errors.failWithoutHelp (/usr/local/lib/node_modules/nativescript/lib/common/errors.js:135:21)
    at SocketProxyFactory.<anonymous> (/usr/local/lib/node_modules/nativescript/lib/device-sockets/ios/socket-proxy-factory.js:91:38)
    at Generator.throw (<anonymous>)
    at rejected (/usr/local/lib/node_modules/nativescript/lib/device-sockets/ios/socket-proxy-factory.js:5:65)
    at <anonymous>```