(PDB-5278) Fix group by dotted fact path with forward slash

When grouping by a keyword, honeysql will convert the keyword to SQL by
calling `name` on it. But that will not return the entire fact name when
there's a forward slash in it because Clojure interprets everything
before the forward slash as the "namespace" and everything after as the
"name".

```
=> (name :facts.foo)
"facts.foo"
=> (name :facts.f/oo)
"oo"
=> (namespace :facts.f/oo)
"facts.f"
```

This commit changes the query engine to use sql raw instead of the
keyword to avoid splitting on forward slashes.

src/puppetlabs/puppetdb/query_eng/engine.clj

@@ -2265,7 +2265,7 @@
                                 :field]))
       ;; Turn facts.foo into a double quoted keyword so that the SQL identifier `:"facts.foo"`
       ;; matches the extraction of (fs.volatile||fs.stable) AS "facts.foo" from the selection
-      (keyword (jdbc/double-quote column-or-fn-name))
+      (htypes/raw (jdbc/double-quote column-or-fn-name))
       (or (get-in query-rec [:projections column-or-fn-name :field])
           (if (some #{column-or-fn-name} (keys pdb-fns->pg-fns))
             (keyword column-or-fn-name)

test/puppetlabs/puppetdb/http/inventory_test.clj

@@ -172,6 +172,14 @@
      ["null?" "facts" true]
      #{}
 
+     ["extract" ["facts.foo"]
+      ["group_by" "facts.foo"]]
+     #{{:facts.foo nil}}
+
+     ["extract" ["facts.f/oo"]
+      ["group_by" "facts.f/oo"]]
+     #{{:facts.f/oo nil}}
+
      ["extract" [["function", "count"] "facts.domain"]
       ["group_by" "facts.domain"]]
      #{{:facts.domain "testing.com" :count 2}