Fix diff output vertical spacing
Fixed file-path in comment from examples.yml to intro_example.yml.
minor docs tweak: link directly to ec2 ini file
cron: Work even without initial crontab

Fixes #2165.
Merge pull request #2159 from stoned/diff-output

Fix diff output vertical spacing
Merge pull request #2167 from jibs/patch-1

minor docs tweak: link directly to ec2 ini file
Merge pull request #2164 from zayenz/patch-2

Fixed file-path in comment from examples.yml to intro_example.yml.
Added support for --check in zfs module
Merge pull request #2176 from johanwiren/zfs_check

Added support for --check in zfs module