Add test to check no line is forgotten when copying 5 lines with stride 2

[tdeo]

No description provided.

[tdeo]

Anyway you could enable Travis build for PR? I can't manage to run the tests on my local machine, the script setup fails at

bin/lhm-spec-setup-cluster.sh: line 64: ./*/mysql_install_db: No such file or directory

And I don't have more instructions

[tdeo]

@arthurnn this adds a test I can't manage to run

[tdeo]

@arthurnn could you run that test someway ? To see if #127 is necessary

[tdeo]

@arthurnn I finally was able to run this test on Travis on my fork and the test is failing

[nikoatwork]

@tdeo you can fix bin/lhm-spec-setup-cluster.sh: line 64: ./*/mysql_install_db: No such file or directory by exchanging it with which mysql_install_db inside the script. At least on unix that should to the trick