Use opentelemetry:time::now instead of systemtime in LogEmitter (#2558)

Author: cijothomas

opentelemetry-sdk/src/logs/logger_provider.rs

@@ -6,7 +6,7 @@ use opentelemetry::{otel_debug, otel_info, trace::TraceContextExt, Context, Inst
 #[cfg(feature = "spec_unstable_logs_enabled")]
 use opentelemetry::logs::Severity;
 
-use std::time::SystemTime;
+use opentelemetry::time::now;
 use std::{
     borrow::Cow,
     sync::{
@@ -313,7 +313,7 @@ impl opentelemetry::logs::Logger for Logger {
             }
         }
         if record.observed_timestamp.is_none() {
-            record.observed_timestamp = Some(SystemTime::now());
+            record.observed_timestamp = Some(now());
         }
 
         for p in processors {

opentelemetry/src/lib.rs

@@ -277,7 +277,7 @@ pub mod trace;
 pub mod logs;
 
 #[doc(hidden)]
-#[cfg(any(feature = "metrics", feature = "trace"))]
+#[cfg(any(feature = "metrics", feature = "trace", feature = "logs"))]
 pub mod time {
     use std::time::SystemTime;