conf change: rename zone variables

Rename the zone variables to make them camelCase as a step towards
making all configuration variables camelCase for consistency.

Note: This patchset requires a change to your yaml configuration if
you're using it, or libconfig if you're using it.

Change-Id: If9cf1d7eb8227d305a1625275f2f7082c0d6905a
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/pid/builder.cpp b/pid/builder.cpp
index 8fef528..2a64215 100644
--- a/pid/builder.cpp
+++ b/pid/builder.cpp
@@ -63,8 +63,8 @@
         const PIDConf& pidConfig = zi.second;
 
         auto zone = std::make_unique<PIDZone>(
-            zoneId, zoneConf->second.minthermalrpm,
-            zoneConf->second.failsafepercent, mgr, modeControlBus,
+            zoneId, zoneConf->second.minThermalRpm,
+            zoneConf->second.failsafePercent, mgr, modeControlBus,
             getControlPath(zi.first).c_str(), deferSignals);
 
         std::cerr << "Zone Id: " << zone->getZoneID() << "\n";