lttng: detect ctf2 kernel traces as kernel traces

Signed-off-by: Arnaud Fiorini <fiorini.arnaud@gmail.com>

Author: arfio

lttng/org.eclipse.tracecompass.lttng2.kernel.core/src/org/eclipse/tracecompass/lttng2/kernel/core/trace/LttngKernelTrace.java

@@ -181,7 +181,7 @@ public IStatus validate(final IProject project, final String path) {
             Map<String, String> environment = ((CtfTraceValidationStatus) status).getEnvironment();
             /* Make sure the domain is "kernel" in the trace's env vars */
             String domain = environment.get("domain"); //$NON-NLS-1$
-            if (domain == null || !domain.equals("\"kernel\"")) { //$NON-NLS-1$
+            if (domain == null || !(domain.equals("kernel") || domain.equals("\"kernel\""))) { //$NON-NLS-1$ //$NON-NLS-2$
                 return new Status(IStatus.ERROR, Activator.PLUGIN_ID, Messages.LttngKernelTrace_DomainError);
             }
             return new TraceValidationStatus(CONFIDENCE, Activator.PLUGIN_ID);