fixed mailrelay installation
Fixed serious bug

Bug caused syco to always ask for environments caused syco not to run as
"designed". Moved the code for this check in HA Proxy installer to be
moved into the install function of the module instead.
Merge pull request #127 from skeppern/version-0.3.1

Fixed serious bug
revert
testing
working postfix install
Merge pull request #120 from kemani/mailrelay

fixed mailrelay installation