Exclude flaky errors from error log checks

Author: smola

dd-smoke-tests/src/main/groovy/datadog/smoketest/ProcessManager.groovy

@@ -255,6 +255,21 @@ abstract class ProcessManager extends Specification {
       return false
     }
 
+    // FIXME: Flaky on Spring Boot, e.g. IastSpringBootSmokeTest :dd-smoke-tests:spring-boot-2.6-webmvc:test semeru8
+    if (line.contains("I/O reactor terminated abnormally")) {
+      return false
+    }
+
+    // FIXME: Flaky profiler exception. See PROF-11072.
+    if (line.contains("ERROR com.datadog.profiling.controller.ProfilingSystem - Fatal exception during profiling startup")) {
+      return false
+    }
+
+    // FIXME: Observed in semeru8 datadog.smoketest.WildflySmokeTest
+    if (line.contains("ERROR datadog.trace.agent.jmxfetch.JMXFetch - jmx collector exited with result: 0")) {
+      return false
+    }
+
     return line.contains("ERROR") || line.contains("ASSERTION FAILED")
     || line.contains("Failed to handle exception in instrumentation")
   }