url tokenization

[gambol99]

Would be nice to permit tokenizing the url for role extraction .. i.e. instead of using

--resource='uri:/logs/project1|roles=project1'
--resource='uri:/logs/project2|roles=project2'

Its preferable to use

--resource='uri:/logs/%role%'

[rvion]

thinking about it, this notation could also make sense

--resource='uri:/logs/%role%|roles=test1,test2

it would further restrict the list of roles allowed.

[rvion]

in order to unify this enhancement with [proposal https://github.com//issues/81], I would like to suggest using %roles%instead of %role% as url template.

• simpler documentation
• richer meaning

concrete example:

when we have

--resource='uri:/logs/%roles%|roles=test1+test2*(test3+test4)

%roles% would be the first valid set of roles according to the description:

uri:/logs/test1
uri:/logs/test2*test3
uri:/logs/test2*test4