Adds a couple more measures to the benchmarking app

mojo/tools/data/rtt_benchmarks

Index: mojo/tools/data/rtt_benchmarks
diff --git a/mojo/tools/data/rtt_benchmarks b/mojo/tools/data/rtt_benchmarks
index ab547b0485065a484776a70a12c3217b1bf412c6..3ba807b19418587a86dd6dbb208159451da32349 100644
--- a/mojo/tools/data/rtt_benchmarks
+++ b/mojo/tools/data/rtt_benchmarks
@@ -8,6 +8,7 @@ benchmarks = [
     'duration': 10,
     'measurements': [
       'avg_duration/echo_benchmark/ping',
+      'dist_duration/echo_benchmark/ping',
     ],
     'shell-args': [
       '--args-for=https://core.mojoapps.io/echo_benchmark.mojo --early-tracing',
@@ -19,6 +20,7 @@ benchmarks = [
     'duration': 10,
     'measurements': [
       'avg_duration/mojo_rtt_benchmark/ping',
+      'dist_duration/mojo_rtt_benchmark/ping',
     ]
   },
   {
@@ -27,6 +29,7 @@ benchmarks = [
     'duration': 10,
     'measurements': [
       'avg_duration/mojo_rtt_benchmark/ping',
+      'dist_duration/mojo_rtt_benchmark/ping',
     ],
     'shell-args': [
       '--args-for=https://core.mojoapps.io/dart_rtt_benchmark.mojo --cpp-server',
@@ -38,6 +41,7 @@ benchmarks = [
     'duration': 10,
     'measurements': [
       'avg_duration/isolate_rtt_benchmark/ping',
+      'dist_duration/isolate_rtt_benchmark/ping',
     ]
   },
 ]