Avoid spaces in the trace file names.

Having spaces in the trace file names introduces slashes in the
file names and not able to pull the file names with the slashes
from the device.So avoid having spaces while constructing the
trace file names.

Bug : b/65737738

Change-Id: Ie1971566586f77d18b17722ce0e3cc9ef3ebfdd3
diff --git a/tests/AppLaunch/src/com/android/tests/applaunch/AppLaunch.java b/tests/AppLaunch/src/com/android/tests/applaunch/AppLaunch.java
index 4d2f97f..1443fc1 100644
--- a/tests/AppLaunch/src/com/android/tests/applaunch/AppLaunch.java
+++ b/tests/AppLaunch/src/com/android/tests/applaunch/AppLaunch.java
@@ -101,7 +101,7 @@
     private static final String PROFILE_COMPILE_SUCCESS = "Success";
     private static final String THIS_TIME = "ThisTime:";
     private static final String LAUNCH_ITERATION = "LAUNCH_ITERATION - %d";
-    private static final String TRACE_ITERATION = "TRACE_ITERATION - %d";
+    private static final String TRACE_ITERATION = "TRACE_ITERATION-%d";
     private static final String LAUNCH_ITERATION_PREFIX = "LAUNCH_ITERATION";
     private static final String TRACE_ITERATION_PREFIX = "TRACE_ITERATION";
     private static final String LAUNCH_ORDER_CYCLIC = "cyclic";