system 0.11.0

• Fix cookbook templates attempting to use incorrect cookbook templates (pr #40)
• Raspbian platform support (pr #41)
• Add ChefSpec matchers (pr #42)
• Refresh TESTING.md (issue #39)
• /etc/hostname should be short hostname and mode 0644 (issue #37)
• Do not include any comment lines in /etc/hostname out of safeness
• Remove temporary archlinux code for cron (timezone provider)
• Only set hostsfile entry if private IP is set (issue #35)
• Network restart control feature (pr #36)
• Make attribute de-reference safe for failing attributes when undefined (pr #34)
• Test Kitchen path fix for docker (issue #33)
• Various test related improvements, bumps, fixes