schemas: Add properties for pid and pid_zone

Description:

Add "DCoefficient" in pid.json.
Add "AccumulateSetPoint", "CycleIntervalTimeMS",
and "UpdateThermalsTimeMS" in pid_zone.json.

These properties are implemented in following commits:
https://gerrit.openbmc.org/c/openbmc/phosphor-pid-control/+/58009
https://gerrit.openbmc.org/c/openbmc/phosphor-pid-control/+/58797
https://gerrit.openbmc.org/c/openbmc/phosphor-pid-control/+/59638

Tested:
Run run-ci.sh passed.

Change-Id: I8eec6e1f8d0abc7eeff035f206a7465a6e713bae
Signed-off-by: Delphine CC Chiu <Delphine_CC_Chiu@wiwynn.com>
diff --git a/schemas/pid.json b/schemas/pid.json
index 06c31fa..4bff66b 100644
--- a/schemas/pid.json
+++ b/schemas/pid.json
@@ -7,6 +7,9 @@
                 "Class": {
                     "type": "string"
                 },
+                "DCoefficient": {
+                    "type": "number"
+                },
                 "FFGainCoefficient": {
                     "type": "number"
                 },