Changes:

- fixed bug in validator causing it to validate files in excluded directories and updated the pre-commit hook
 - hardware uniqueness is now based on the cpu, memory, storage, and storage_type fields, fixes #230
 - initial settings of a minval/maxval for a session knob are calculated based on its resource type and the user's hardware
 - squashed migrations

server/website/website/fixtures/postgres-94_knobs.json

@@ -84,7 +84,7 @@
             "category": "Resource Usage / Asynchronous Behavior",
             "maxval": 262143,
             "dbms": 4,
-            "resource": 4,
+            "resource": 2,
             "name": "global.max_worker_processes",
             "minval": 0,
             "default": 8,

server/website/website/fixtures/postgres-96_knobs.json

@@ -3095,7 +3095,7 @@
             "summary": "Sets the maximum number of parallel processes per executor node.",
             "unit": "3",
             "description": "",
-            "resource": "4"
+            "resource": "2"
         },
         "model": "website.KnobCatalog"
     },
@@ -3255,7 +3255,7 @@
             "summary": "Sets the WAL size that triggers a checkpoint.",
             "unit": "1",
             "description": "",
-            "resource": "4"
+            "resource": "3"
         },
         "model": "website.KnobCatalog"
     },
@@ -3275,7 +3275,7 @@
             "summary": "Maximum number of concurrent worker processes.",
             "unit": "3",
             "description": "",
-            "resource": "4"
+            "resource": "2"
         },
         "model": "website.KnobCatalog"
     },
@@ -3315,7 +3315,7 @@
             "summary": "Sets the minimum size to shrink the WAL to.",
             "unit": "1",
             "description": "",
-            "resource": "4"
+            "resource": "3"
         },
         "model": "website.KnobCatalog"
     },

server/website/website/fixtures/test_user_sessions.json

@@ -12,13 +12,11 @@
     },
     {
         "fields": { 
-            "type": 1, 
-            "name": "New Hardware", 
 	    "cpu": 4,
-	    "memory": 16.0,
-	    "storage": "32",
-	    "storage_type": "",
-	    "additional_specs": ""
+	    "memory": 16,
+	    "storage": 32,
+	    "storage_type": 5,
+	    "additional_specs": null
         }, 
         "model": "website.Hardware",
         "pk": 1