feature request: token-create: add the option to enable install of package dependencies when using -p

[BenjaminYde]

Currently when installing a package (using token-login) it is required to define all the package dependencies when using the --projects argument.

For example, i want to limit the install to package-1, but package-1 depends on pytest
I also need to define pytest in --projects.
When working with dependencies, it is not user friendly when needing to specify the dependencies.

The following is not possible:

    devpi token-create \
        -u=client-a \
        -a=pkg_read \
        -i=root/pypi,client-a/project-a \
        -p=package-1

The following is possible:

    devpi token-create \
        -u=client-a \
        -a=pkg_read \
        -i=root/pypi,client-a/project-a \
        -p=package-1,pytest

The same issue is with the -i,
You need to specify all the index dependencies.

[fschulze]

I see no way to do this. For one, getting the dependencies is hard and they might change in the future.