[__postgres_{database,role}] Run psql with --no-password (-w)

cdist does not work with interactive processes, so it's better to fail when
manual password input is required.

cdist/conf/type/__postgres_database/explorer/state

@@ -34,7 +34,7 @@ esac
 
 name="$__object_id"
 
-if test -n "$(su - "$postgres_user" -c "psql postgres -tAc \"SELECT 1 FROM pg_database WHERE datname='$name'\"")"
+if test -n "$(su - "$postgres_user" -c "psql postgres -twAc \"SELECT 1 FROM pg_database WHERE datname='$name'\"")"
 then
     echo 'present'
 else

cdist/conf/type/__postgres_role/explorer/state

@@ -34,7 +34,7 @@ esac
 
 name="$__object_id"
 
-if test -n "$(su - "$postgres_user" -c "psql postgres -tAc \"SELECT 1 FROM pg_roles WHERE rolname='$name'\"")"
+if test -n "$(su - "$postgres_user" -c "psql postgres -twAc \"SELECT 1 FROM pg_roles WHERE rolname='$name'\"")"
 then
     echo 'present'
 else

cdist/conf/type/__postgres_role/gencode-remote

@@ -55,7 +55,7 @@ case "$state_should" in
         [ -n "$password" ] && password="PASSWORD '$password'"
 
         cmd="CREATE ROLE $name WITH $password $booleans"
-        echo "su - '$postgres_user' -c \"psql postgres -c \\\"$cmd\\\"\""
+        echo "su - '$postgres_user' -c \"psql postgres -wc \\\"$cmd\\\"\""
     ;;
     absent)
         echo "su - '$postgres_user' -c \"dropuser \\\"$name\\\"\""