Correct the obm.yml file
Update the cyrus-common role

Add the cyrus.conf and imapd.conf skeleton
Update the cyrus-backend role

Complete the cyrus.conf file with the cyrus-backend directives in the START, SERVICES and EVENTS sections
Add the TLS section in imapd.conf.
Correct the obm-db-role to set the OBM default interface language
Remove the postfix role
Add the postfix-common role

This role :
 - installs the postfix package
 - brings the default main.cf and master.cf
 - adds the postfix service on boot
Add the postfix-smtpin role

This role :
 - adds the submission services in master.cf
 - adds the tls section in main.cf and the smtps service in the master.cf if we want to use the smtps
 - adds the relayhost in master.cf if we need it
Remove the OBM banner
Correct the inventory
Enable full proxy support
Add small corrections in common/repositories task
Split repositories config for CentOS and RHEL
Clean cyrus-common and cyrus-backend role

Add the cyrus-imapd service restart in the cyrus-backend role
Add proxy support for the obm-conf role
Update the cyrus-backend role

This role :
 - adds the tls section in imapd.conf and the imaps and pop3s service in the cyrus.conf if we want to use the services over SSL
 - adds the debug mode in imapd.conf if we need it
Add murder configuration in cyrus-backend role
Some corrections and optimized instructions
Add cyrus-sasl-plain packages to allow plaintext logins
Update the config.yml with a dedicated variable for the murder concept
Update the config.yml with a dedicated variable for the murder concept