Test against several Augeas versions
mailalias: remove quote enclosed line from full file to make tests pass with Augeas 0.10.0
mounttab: fix specs for Augeas 0.10.0
sshd_config: fix tests on Augeas 0.10.0
shellvar: adapt specs to pass on Augeas 0.10.0
Do not test pg_hba, puppet_auth, vfstab and rsyslog on Augeas 0.10.0
Add compatibility matrix