Add the ability to call commands with a package prefix to allow clashing packages to work

[dshafik]

If two packages contain the same command, the current behavior is undefined (the first one encountered is executed).

It should be possible to prefix a command with it's package name to explicitly determine which one is run, e.g. if two packages named "property" and "promotional-deployment" both have a "property" command, you would call:

$ akamai property/property
$ akamai promotional-deployment/property

Akamai CLI should error out if the unqualified name resolves to more than one command.

[lkowalsk-akamai-com]

We believe that this issue is fixed with 1.3.0 release. Please feel free to reaopen the ticket if thats not the case.