Fix `OR` syntax error
Properly identify Amazon Linux AMI using `lsb_release`. Fixes #416.
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Ignore SC2035
Merge pull request #423 from s0undt3ch/develop

Misc fixes
Bump version.
Only require PIP based installations for Debian < 7. Fixes #424.
Replace `packages` for `__PACKAGES` to "hide" the variable name
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Install `python-zypp` on SuSE and openSUSE

This is required by Salt's `zypper` module.
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Explicitly disallow installation attempts for Amazon Linux AMI 2010.xx

Fixes #426
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Make shell check happier
CentOS 7 now uses SystemD instead of SysV

Ensure centos 7 is capable of using systemd for checking if the service is running/restarting
Merge pull request #427 from s0undt3ch/develop

Amazon Linux AMI & openSUSE updates
Merge pull request #428 from jeteokeeffe/patch-1

CentOS 7 now uses SystemD instead of SysV
Only install EPEL if not already installed.

Refs #422. Closes #421.

Enable the systemd service. Closes #425.
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If system is using systemd, enable services.

Closes #425.