Updated patch coverage script.
Updated patch coverage script.

Ensured that the coverage output is only shown in verbose mode after
all other errors have been found.
Clearly separate the script output from the coverage output
Added errors and warning tags to... errors and warnings.

Change-Id: Ica9abc713fd35e53bbd40031503e87a911624ced

dalihub/dali-core,dalihub/dali-core,dalihub/dali-core,dalihub/dali-core