Description of problem:
when a profile is a part of 'dnf modularity info' argument, printed info 
is not profile-specific. The output is the same for all profiles, even 
for non-existent ones.

Version-Release number of selected component (if applicable):

How reproducible:
always

Steps to Reproduce:
1. create a module with multiple profiles
   (e.g. ModuleA/client, server, default, devel, minimal)
2. enable the module 
3. run 'dnf module info' for various arguments, e.g.
   dnf module info ModuleA
   dnf module info ModuleA:f26
   dnf module info ModuleA:f26/client
   dnf module info ModuleA:f26/default
   dnf module info ModuleA:f26/non-existent-profile
   
Actual results:
the output is the same for all commands mentioned above  

Expected results:
info for profiles should be profile-specific 
or at least a warning should be printed that the profile is ignored