Changed the step name for wait_for_any.py to include only one revision.

scripts/slave/recipe_modules/auto_bisect/example.expected/basic.json

 [
   {
     "cmd": [
       "git",
       "log",
       "--format=hash:%H",
       "--grep",
       "Cr-Commit-Position: refs/heads/master@{#314017}",
       "-1",
       "refs/heads/master"
@@ skipping 131 matching lines @@
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[auto_bisect]/resources/wait_for_any.py",
       "[DEPOT_TOOLS]/gsutil.py",
       "gs://chrome-perf/Linux Builder/full-build-linux_a6298e4afedbf2cd461755ea6f45b0ad64222222.zip",
       "gs://chrome-perf/Linux Builder/full-build-linux_00316c9ddfb9d7b4e1ed2fff9fe6d964d2111111.zip"
     ],
-    "name": "Waiting for any of these revisions:314015 314017"
+    "name": "Waiting for revision 314015 and 1 other revision(s)."
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[gsutil]/resources/gsutil_wrapper.py",
       "--",
       "[DEPOT_TOOLS]/gsutil.py",
       "--force-version",
       "3.25",
@@ skipping 135 matching lines @@
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[auto_bisect]/resources/wait_for_any.py",
       "[DEPOT_TOOLS]/gsutil.py",
       "gs://chrome-perf/bisect-results/00316c9ddfb9d7b4e1ed2fff9fe6d964d2111111-test"
     ],
-    "name": "Waiting for any of these revisions:314015 314017 (2)"
+    "name": "Waiting for revision 314015 and 1 other revision(s). (2)"
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[gsutil]/resources/gsutil_wrapper.py",
       "--",
       "[DEPOT_TOOLS]/gsutil.py",
       "--force-version",
       "3.25",
@@ skipping 64 matching lines @@
     "name": "Requesting build for dcdcdc0ff1122212323134879ddceeb1240b0988 via git try."
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[auto_bisect]/resources/wait_for_any.py",
       "[DEPOT_TOOLS]/gsutil.py",
       "gs://chrome-perf/Linux Builder/full-build-linux_dcdcdc0ff1122212323134879ddceeb1240b0988.zip"
     ],
-    "name": "Waiting for any of these revisions:314016"
+    "name": "Waiting for revision 314016"
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[gsutil]/resources/gsutil_wrapper.py",
       "--",
       "[DEPOT_TOOLS]/gsutil.py",
       "--force-version",
       "3.25",
@@ skipping 41 matching lines @@
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[auto_bisect]/resources/wait_for_any.py",
       "[DEPOT_TOOLS]/gsutil.py",
       "gs://chrome-perf/bisect-results/dcdcdc0ff1122212323134879ddceeb1240b0988-test"
     ],
-    "name": "Waiting for any of these revisions:314016 (2)"
+    "name": "Waiting for revision 314016 (2)"
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[gsutil]/resources/gsutil_wrapper.py",
       "--",
       "[DEPOT_TOOLS]/gsutil.py",
       "--force-version",
       "3.25",
@@ skipping 195 matching lines @@
     "name": "Requesting build for a6298e4afedbf2cd461755ea6f45b0ad64222222 via git try. (2)"
   },
   {
     "cmd": [
       "rm",
       "/tmp/a6298e4afedbf2cd461755ea6f45b0ad64222222-build.diff"
     ],
     "name": "cleaning up patch"
   }
 ]