Merge pull request #124 from s0undt3ch/develop

Some more Debian fixes
force the use of the $SALT_ETC_DIR instead of hardcoded /etc/salt

Impact on :

- config_salt()

- SmartOS install functions
Merge pull request #125 from virtua-network/fix_etc_dir

Force the use of the $SALT_ETC_DIR instead of hardcoded /etc/salt
Disable syndic test case.