'knife node run_list add' should take a list of RunListItems

I create a pull-request with a possible solution to this bug at https://github.com/opscode/chef/pull/244

I did create a test and I tried by hand in my environment and is working fine. i also changed ENTRY by ENTRIES in the help description to avoid confusion.

I hope this fix the issue, it was annoying me to.

One idea was parsing all of @name_args by removing the node name, e.g.

ruby-1.9.2-p290 :001 > %w{foo bar baz qux quux}[1..-1]
 => ["bar", "baz", "qux", "quux"]

However, knife ec2 server create -r takes a comma separated list so we want to be prepared for that.

Can we add more test cases here to make sure we've got good coverage?

# with a space
@knife.name_args = [ "adam", "role[monkey], role[duck]" ]
# an extraneous comma
@knife.name_args = [ "adam", "role[monkey]," ]

I've added those test cases and remove the extra spaces (in case they were any) that wasn't working. It's at the pull-request.

But I wasn't sure about doing something on the parsing @name_args thing. I'm not sure what do you want to do.

I think we could support passing items with or without comas, but not mixed. I mean:

# with comas
knife node run_list add adam role[monkey], role[duck],recipe[bird::fly]

# without comas
knife node run_list add adam role[monkey] role[duck] recipe[bird::fly]

But I don't think mixing both make much sense. Do you?

Well, I added and implemented the test cases and the mixed one. I created a single commit in case you see it good enough to be merged. It's at the pull request.

No it checks (and pass) the follow cases:

# with comas
@knife.name_args = [ "adam", "role[monkey],role[duck]" ]

# with comas and a space
@knife.name_args = [ "adam", "role[monkey], role[duck]" ]

# with no comas ( knife node run_list add adam role[monkey] role[duck] )
@knife.name_args = [ "adam", "role[monkey]", "role[duck]" ]

# mixed arguments and comas ( knife node run_list add adam role[monkey] role[duck],recipe[bird::fly] )
@knife.name_args = [ "adam", "role[monkey]", "role[duck],recipe[bird::fly]" ]

# an extraneous comma
@knife.name_args = [ "adam", "role[monkey]," ]

Any other suggestiongs? Does it fit with what you had in mind?
Thanks for your feedback and help

Marked to be merged.