[MERGE #2874 @obastemur] jenkins: add tab exception for Makefile
[MERGE #2874 @obastemur] jenkins: add tab exception for Makefile

Merge pull request #2874 from obastemur:add_make

mrkmarron/ChakraCore,mrkmarron/ChakraCore,Microsoft/ChakraCore,Microsoft/ChakraCore,mrkmarron/ChakraCore,Microsoft/ChakraCore,Microsoft/ChakraCore,mrkmarron/ChakraCore,Microsoft/ChakraCore,mrkmarron/ChakraCore,mrkmarron/ChakraCore,mrkmarron/ChakraCore,Microsoft/ChakraCore