design-optables: Use double quotes in examples

This makes copy-pasting them into `gnt-filter`/curl easier since
JSON requires double quotes.

Admittedly, these were originally thought of as Python dicts so
the single quotes were fine, but in practice these examples are used
more often where JSON is required.
Signed-off-by: Niklas Hambuechen <niklash@google.com>
Signed-off-by: Klaus Aehlig <aehlig@google.com>
Reviewed-by: Klaus Aehlig <aehlig@google.com>

doc/design-optables.rst

@@ -149,9 +149,9 @@ Examples
 Draining the queue.
 ::
 
-   {'priority': 0,
-    'predicates': [['jobid', ['>', 'id', 'watermark']]],
-    'action': 'REJECT'}
+   {"priority": 0,
+    "predicates": [["jobid", [">", "id", "watermark"]]],
+    "action": "REJECT"}
 
 Soft draining could be achieved by replacing ``REJECT`` by ``PAUSE`` in the
 above example.
@@ -159,25 +159,25 @@ above example.
 Pausing all new jobs not belonging to a specific maintenance.
 ::
 
-   {'priority': 1,
-    'predicates': [['jobid', ['>', 'id', 'watermark']],
-                   ['reason', ['!', ['=~', 'reason', 'maintenance pink bunny']]]],
-    'action': 'PAUSE'}
+   {"priority": 1,
+    "predicates": [["jobid", [">", "id", "watermark"]],
+                   ["reason", ["!", ["=~", "reason", "maintenance pink bunny"]]]],
+    "action": "PAUSE"}
 
 Canceling all queued instance creations and disallowing new such jobs.
 ::
 
-  {'priority': 1,
-   'predicates': [['opcode', ['=', 'OP_ID', 'OP_INSTANCE_CREATE']]],
-   'action': 'REJECT'}
+  {"priority": 1,
+   "predicates": [["opcode", ["=", "OP_ID", "OP_INSTANCE_CREATE"]]],
+   "action": "REJECT"}
 
 Limit the number of simultaneous instance disk replacements to 10 in order
 to throttle replication traffic.
 ::
 
-  {'priority': 99,
-   'predicates': [['opcode', ['=', 'OP_ID', 'OP_INSTNCE_REPLACE_DISKS']]],
-   'action': ['RATE_LIMIT', 10]}
+  {"priority": 99,
+   "predicates": [["opcode", ["=", "OP_ID", "OP_INSTNCE_REPLACE_DISKS"]]],
+   "action": ["RATE_LIMIT", 10]}