* update syntax to POSIX
The function keyword is not recognize by every POSIX-compliant shell. The function keyword is a bashism, a bash extension. POSIX syntax does not use function and mandates the use of parenthesis.
This commit fixes the two issues :
./linux/provision-postgres-linux.sh: 9: function: not found
./linux/provision-postgres-linux.sh: 15: Syntax error: "}" unexpected
* update path init.sql
* update steps numbers yarn setup
There were two number 3's, everything should be correct now.
* delete useless -e
