Check if file exists before copying the file (avoid an error)
Check if file exists before copying the file (avoid an error)

Change-Id: I1ac3be9e930f0ecef503a44d90f336aee830dc2b
Signed-off-by: Florent BENOIT <aed23c9e57d07943853fa5abcd82c7d7f632be43@codenvy.com>

lehmanju/che,akervern/che,TypeFox/che,snjeza/che,davidfestal/che,cdietrich/che,jonahkichwacoders/che,Patricol/che,cemalkilic/che,sudaraka94/che,bartlomiej-laczkowski/che,codenvy/che,Patricol/che,bartlomiej-laczkowski/che,snjeza/che,davidfestal/che,sleshchenko/che,cdietrich/che,lehmanju/che,davidfestal/che,akervern/che,bartlomiej-laczkowski/che,cdietrich/che,sudaraka94/che,sleshchenko/che,bartlomiej-laczkowski/che,snjeza/che,davidfestal/che,cemalkilic/che,sleshchenko/che,Patricol/che,codenvy/che,bartlomiej-laczkowski/che,akervern/che,bartlomiej-laczkowski/che,lehmanju/che,codenvy/che,TypeFox/che,akervern/che,bartlomiej-laczkowski/che,cdietrich/che,sunix/che,sudaraka94/che,sleshchenko/che,davidfestal/che,lehmanju/che,cdietrich/che,Patricol/che,cemalkilic/che,sudaraka94/che,cdietrich/che,cemalkilic/che,cemalkilic/che,cemalkilic/che,cemalkilic/che,akervern/che,sunix/che,jonahkichwacoders/che,TypeFox/che,TypeFox/che,davidfestal/che,Patricol/che,TypeFox/che,Patricol/che,snjeza/che,jonahkichwacoders/che,sudaraka94/che,jonahkichwacoders/che,lehmanju/che,Patricol/che,cdietrich/che,sudaraka94/che,sleshchenko/che,cdietrich/che,akervern/che,codenvy/che,cemalkilic/che,sleshchenko/che,snjeza/che,Patricol/che,akervern/che,lehmanju/che,davidfestal/che,akervern/che,bartlomiej-laczkowski/che,sudaraka94/che,sudaraka94/che,TypeFox/che,TypeFox/che,TypeFox/che,lehmanju/che,sunix/che,Patricol/che,jonahkichwacoders/che,sunix/che,Patricol/che,davidfestal/che,jonahkichwacoders/che,sleshchenko/che,bartlomiej-laczkowski/che,sleshchenko/che,davidfestal/che,cemalkilic/che,TypeFox/che,TypeFox/che,snjeza/che,jonahkichwacoders/che,jonahkichwacoders/che,davidfestal/che,sunix/che,sunix/che,akervern/che,lehmanju/che,jonahkichwacoders/che,sunix/che,cdietrich/che,jonahkichwacoders/che,sudaraka94/che,sudaraka94/che,sunix/che,sleshchenko/che,lehmanju/che,snjeza/che,snjeza/che,sunix/che,snjeza/che,sleshchenko/che