Panic if --docker-run --name uses space not '=' to separate option name from value

[ralph-mcardell]

Describe the bug

Just migrating from legacy telepresence and dropping in telepresence 2 with existing use of
legacy telepresence panicked.

Stack trace led me to the

startInDocker function in the

https://github.com/telepresenceio/telepresence/blob/release/v2/pkg/client/cli/intercept/state.go

file.

Specifically the attempt to extract the value of the '--name' option:

name, hasName := getArg("--name")

fails and panics in the getArg function:

if i+1 < len(args) {
   				return parts[i+1], true

As it is assumed the parts array has enough elements, which is not the case if the --name option is of the form

--name the-name

rather than:

--name=the-name

as the string is only split on '=':

   parts := strings.Split(arg, "=")

To Reproduce

run telepresence v2 using legacy options and in the --docker-run arguments specify --name the-name not --name=the-name

telepresence --swap-deployment deployment-name --namespace blah --docker-run --name the-name ...

Expected behavior
telepresence to not panic and to run the docker container as specified

Versions (please complete the following information):

• all v2.9.5
• Linux Alma 8
• Rancher k3s