Implement clang-tidy fixes

clang-tidy allows the CI robot to check many things via static analysis.

All changes here were made by the clang-tidy robot, and include a number
of modernization fixes.  updating the tidy file will be done at a later
date.

Signed-off-by: Ed Tanous <etanous@nvidia.com>
Change-Id: I98cc4d600a3c589675507958f6d2350b2141216b
diff --git a/failsafeloggers/failsafe_logger.cpp b/failsafeloggers/failsafe_logger.cpp
index 91416e0..f1fcb14 100644
--- a/failsafeloggers/failsafe_logger.cpp
+++ b/failsafeloggers/failsafe_logger.cpp
@@ -8,7 +8,7 @@
 
 void FailsafeLogger::outputFailsafeLog(
     const int64_t zoneId, const bool newFailsafeState,
-    const std::string location, const std::string reason)
+    const std::string& location, const std::string& reason)
 {
     // Remove outdated log entries.
     const auto now = std::chrono::high_resolution_clock::now();