clasp login --no-localhost if we can't create a server

[grant]

Expected Behavior

clasp login automatically detects that the user can't run localhost.
At least suggest clasp login --no-localhost.

Actual Behavior

Clasp login will fail with an uncaught error:

clasp login
Logging in globally...
🔑 Authorize clasp by visiting this url:
https://accounts.google.com/o/oauth2/v2/auth?access_type=offline&scope=https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fscript.deployments%20https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fscript.projects%20https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fscript.webapp.deploy%20https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fdrive.metadata.readonly%20https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fdrive.file%20https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fservice.management%20https%3A%2F%2Fwww.googleapis.com%2Fauth%2Flogging.read%20https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fcloud-platform&response_type=code&client_id=1072944905499-vm2v2i5dvn0a0d2o4ca36i1vge8cvbn0.apps.googleusercontent.com&redirect_uri=http%3A%2F%2Flocalhost%3A33109

(node:13565) UnhandledPromiseRejectionWarning: Error: Exited with code 3
    at ChildProcess.cp.once.code (/usr/lib/node_modules/@google/clasp/node_modules/opn/index.js:84:13)
    at Object.onceWrapper (events.js:285:13)
    at ChildProcess.emit (events.js:197:13)
    at maybeClose (internal/child_process.js:984:16)
    at Socket.stream.socket.on (internal/child_process.js:401:11)
    at Socket.emit (events.js:197:13)
    at Pipe._handle.close (net.js:611:12)
(node:13565) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:13565) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
^C