add more multiValued arguments

[iricigor]

Currently only --exclude in getblobs and listblobs is supporting multiple values (i.e. --exclude value1 --exclude value2). See PR #180 for details. We can add this to other subcommands / arguments:

• setblobs / exclude
• listblobs / container

Maybe also we can add it for both input and output arguments in all commands? In this case we need to verify number of values.

Also, documentation needs to be updated to reflect this changes.