__postgres_*: fix forgotten edge cases in delimited identifier escape

cdist/conf/type/__postgres_database/gencode-remote

@@ -43,10 +43,14 @@ if [ "$state_should" != "$state_is" ]; then
          if [ -f "$__object/parameter/owner" ]; then
             owner="-O \"$(cat "$__object/parameter/owner")\""
          fi
-         echo "su - '$postgres_user' -c \"createdb $owner \"$name\"\""
+         cat << EOF
+su - '$postgres_user' -c "createdb $owner \"$name\""
+EOF
       ;;
       absent)
-         echo "su - '$postgres_user' -c \"dropdb \"$name\"\""
+         cat << EOF
+su - '$postgres_user' -c "dropdb \"$name\""
+EOF
       ;;
    esac
 fi

cdist/conf/type/__postgres_role/gencode-remote

@@ -53,11 +53,13 @@ case "$state_should" in
         done
 
         [ -n "$password" ] && password="PASSWORD '$password'"
-
-        cmd="CREATE ROLE \"$name\" WITH $password $booleans"
-        echo "su - '$postgres_user' -c \"psql postgres -wc \\\"$cmd\\\"\""
+        cat << EOF
+su - '$postgres_user' -c "psql postgres -wc 'CREATE ROLE \"$name\" WITH $password $booleans;'"
+EOF
     ;;
     absent)
-        echo "su - '$postgres_user' -c \"dropuser \\\"$name\\\"\""
+        cat << EOF
+su - '$postgres_user' -c "dropuser \"$name\""
+EOF
     ;;
 esac