KeywordBearTest.py: Add test for multiple patches
KeywordBearTest.py: Add test for multiple patches

Tests to check KeywordBear offers patches for every commented line
in which keyword is found.

Closes https://github.com/coala/coala-bears/issues/1306

coala/coala-bears,coala/coala-bears,refeed/coala-bears,coala/coala-bears,refeed/coala-bears,coala-analyzer/coala-bears,refeed/coala-bears,coala-analyzer/coala-bears,coala/coala-bears,refeed/coala-bears,coala/coala-bears,coala/coala-bears,coala/coala-bears,coala-analyzer/coala-bears,refeed/coala-bears,coala/coala-bears,coala-analyzer/coala-bears,coala-analyzer/coala-bears,refeed/coala-bears,coala-analyzer/coala-bears,coala-analyzer/coala-bears,refeed/coala-bears,coala-analyzer/coala-bears,refeed/coala-bears,refeed/coala-bears,refeed/coala-bears,coala/coala-bears,refeed/coala-bears,coala/coala-bears,coala/coala-bears,coala/coala-bears,coala-analyzer/coala-bears