Replace python3 with vpython3 in gclient/api.py

For context see comments 5 and 6 here: https://bugs.chromium.org/p/chromium/issues/detail?id=1298922#c6

Recipe-Nontrivial-Roll: build
Recipe-Nontrivial-Roll: build_limited
Recipe-Nontrivial-Roll: chrome_release
Recipe-Nontrivial-Roll: chromiumos
Recipe-Nontrivial-Roll: infra
Bug: chromium:1298922
Change-Id: Id424cec27ca64ac0c2e746d54edf044820915cd8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/3480835
Reviewed-by: Josip Sokcevic <sokcevic@google.com>
Commit-Queue: Ravi Mistry <rmistry@chromium.org>

recipes/recipe_modules/gclient/api.py

@@ -100,7 +100,7 @@ class GclientApi(recipe_api.RecipeApi):
           self.m.buildbucket.build.builder.builder,
           self.m.buildbucket.build.id)
     with self.m.context(env=env, env_suffixes=env_suffixes):
-      cmd = ['python3', '-u', self.repo_resource('gclient.py')] + cmd
+      cmd = ['vpython3', '-u', self.repo_resource('gclient.py')] + cmd
       return self.m.step(prefix + name,
                          cmd,
                          infra_step=infra_step,

recipes/recipe_modules/gclient/examples/full.expected/basic.json

@@ -1,7 +1,7 @@
 [
   {
     "cmd": [
-      "python3",
+      "vpython3",
       "-u",
       "RECIPE_REPO[depot_tools]/gclient.py",
       "config",
@@ -18,7 +18,7 @@
   },
   {
     "cmd": [
-      "python3",
+      "vpython3",
       "-u",
       "RECIPE_REPO[depot_tools]/gclient.py",
       "sync",
@@ -55,7 +55,7 @@
   },
   {
     "cmd": [
-      "python3",
+      "vpython3",
       "-u",
       "RECIPE_REPO[depot_tools]/gclient.py",
       "recurse",
@@ -74,7 +74,7 @@
   },
   {
     "cmd": [
-      "python3",
+      "vpython3",
       "-u",
       "RECIPE_REPO[depot_tools]/gclient.py",
       "recurse",
@@ -93,7 +93,7 @@
   },
   {
     "cmd": [
-      "python3",
+      "vpython3",
       "-u",
       "RECIPE_REPO[depot_tools]/gclient.py",
       "config",
@@ -111,7 +111,7 @@
   },
   {
     "cmd": [
-      "python3",
+      "vpython3",
       "-u",
       "RECIPE_REPO[depot_tools]/gclient.py",
       "sync",
@@ -155,7 +155,7 @@
   },
   {
     "cmd": [
-      "python3",
+      "vpython3",
       "-u",
       "RECIPE_REPO[depot_tools]/gclient.py",
       "recurse",
@@ -175,7 +175,7 @@
   },
   {
     "cmd": [
-      "python3",
+      "vpython3",
       "-u",
       "RECIPE_REPO[depot_tools]/gclient.py",
       "recurse",
@@ -220,7 +220,7 @@
   },
   {
     "cmd": [
-      "python3",
+      "vpython3",
       "-u",
       "RECIPE_REPO[depot_tools]/gclient.py",
       "runhooks"

recipes/recipe_modules/gclient/examples/full.expected/revision.json

@@ -1,7 +1,7 @@
 [
   {
     "cmd": [
-      "python3",
+      "vpython3",
       "-u",
       "RECIPE_REPO[depot_tools]/gclient.py",
       "config",
@@ -33,7 +33,7 @@
   },
   {
     "cmd": [
-      "python3",
+      "vpython3",
       "-u",
       "RECIPE_REPO[depot_tools]/gclient.py",
       "sync",
@@ -87,7 +87,7 @@
   },
   {
     "cmd": [
-      "python3",
+      "vpython3",
       "-u",
       "RECIPE_REPO[depot_tools]/gclient.py",
       "recurse",
@@ -121,7 +121,7 @@
   },
   {
     "cmd": [
-      "python3",
+      "vpython3",
       "-u",
       "RECIPE_REPO[depot_tools]/gclient.py",
       "recurse",
@@ -155,7 +155,7 @@
   },
   {
     "cmd": [
-      "python3",
+      "vpython3",
       "-u",
       "RECIPE_REPO[depot_tools]/gclient.py",
       "config",
@@ -188,7 +188,7 @@
   },
   {
     "cmd": [
-      "python3",
+      "vpython3",
       "-u",
       "RECIPE_REPO[depot_tools]/gclient.py",
       "sync",
@@ -247,7 +247,7 @@
   },
   {
     "cmd": [
-      "python3",
+      "vpython3",
       "-u",
       "RECIPE_REPO[depot_tools]/gclient.py",
       "recurse",
@@ -282,7 +282,7 @@
   },
   {
     "cmd": [
-      "python3",
+      "vpython3",
       "-u",
       "RECIPE_REPO[depot_tools]/gclient.py",
       "recurse",
@@ -354,7 +354,7 @@
   },
   {
     "cmd": [
-      "python3",
+      "vpython3",
       "-u",
       "RECIPE_REPO[depot_tools]/gclient.py",
       "runhooks"

recipes/recipe_modules/gclient/examples/full.expected/tryserver.json

@@ -1,7 +1,7 @@
 [
   {
     "cmd": [
-      "python3",
+      "vpython3",
       "-u",
       "RECIPE_REPO[depot_tools]/gclient.py",
       "config",
@@ -33,7 +33,7 @@
   },
   {
     "cmd": [
-      "python3",
+      "vpython3",
       "-u",
       "RECIPE_REPO[depot_tools]/gclient.py",
       "sync",
@@ -85,7 +85,7 @@
   },
   {
     "cmd": [
-      "python3",
+      "vpython3",
       "-u",
       "RECIPE_REPO[depot_tools]/gclient.py",
       "recurse",
@@ -119,7 +119,7 @@
   },
   {
     "cmd": [
-      "python3",
+      "vpython3",
       "-u",
       "RECIPE_REPO[depot_tools]/gclient.py",
       "recurse",
@@ -153,7 +153,7 @@
   },
   {
     "cmd": [
-      "python3",
+      "vpython3",
       "-u",
       "RECIPE_REPO[depot_tools]/gclient.py",
       "config",
@@ -186,7 +186,7 @@
   },
   {
     "cmd": [
-      "python3",
+      "vpython3",
       "-u",
       "RECIPE_REPO[depot_tools]/gclient.py",
       "sync",
@@ -245,7 +245,7 @@
   },
   {
     "cmd": [
-      "python3",
+      "vpython3",
       "-u",
       "RECIPE_REPO[depot_tools]/gclient.py",
       "recurse",
@@ -280,7 +280,7 @@
   },
   {
     "cmd": [
-      "python3",
+      "vpython3",
       "-u",
       "RECIPE_REPO[depot_tools]/gclient.py",
       "recurse",
@@ -352,7 +352,7 @@
   },
   {
     "cmd": [
-      "python3",
+      "vpython3",
       "-u",
       "RECIPE_REPO[depot_tools]/gclient.py",
       "runhooks"

recipes/recipe_modules/gclient/tests/diff_deps.expected/basic.json

@@ -27,7 +27,7 @@
   },
   {
     "cmd": [
-      "python3",
+      "vpython3",
       "-u",
       "RECIPE_REPO[depot_tools]/gclient.py",
       "recurse",

recipes/recipe_modules/gclient/tests/diff_deps.expected/dont have revision yet.json

@@ -27,7 +27,7 @@
   },
   {
     "cmd": [
-      "python3",
+      "vpython3",
       "-u",
       "RECIPE_REPO[depot_tools]/gclient.py",
       "recurse",

recipes/recipe_modules/gclient/tests/diff_deps.expected/no change, exception.json

@@ -27,7 +27,7 @@
   },
   {
     "cmd": [
-      "python3",
+      "vpython3",
       "-u",
       "RECIPE_REPO[depot_tools]/gclient.py",
       "recurse",

recipes/recipe_modules/gclient/tests/diff_deps.expected/windows.json

@@ -27,7 +27,7 @@
   },
   {
     "cmd": [
-      "python3",
+      "vpython3",
       "-u",
       "RECIPE_REPO[depot_tools]\\gclient.py",
       "recurse",