[test] Enable staging test runner changes on fyi bots

Bug: v8:6917
Change-Id: Ica9b590d194da305416826eeed9f49963b8d97ca
Reviewed-on: https://chromium-review.googlesource.com/839776Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50281}

infra/testing/client.v8.pyl

@@ -17,4 +17,10 @@
   'V8 Linux64 - debug': [
     {'name': 'v8testing', 'variant': 'minor_mc', 'shards': 1},
   ],
+  'V8 Linux64 - fyi': [
+    {'name': 'v8testing', 'variant': 'infra_staging', 'shards': 1},
+  ],
+  'V8 Linux64 - debug - fyi': [
+    {'name': 'v8testing', 'variant': 'infra_staging', 'shards': 2},
+  ],
 }
\ No newline at end of file

infra/testing/tryserver.v8.pyl

@@ -8,6 +8,9 @@
   #   {'name': 'benchmarks', 'variant': 'default', 'shards': 1},
   # ],
 
+  'v8_linux64_fyi_rel_ng_triggered': [
+    {'name': 'v8testing', 'variant': 'infra_staging', 'shards': 2},
+  ],
   'v8_linux64_rel_ng_triggered': [
     {'name': 'v8testing', 'variant': 'minor_mc', 'shards': 1},
   ],

tools/testrunner/local/variants.py

@@ -18,6 +18,9 @@ ALL_VARIANT_FLAGS = {
   "nooptimization": [["--noopt"]],
   "stress_background_compile": [["--background-compile", "--stress-background-compile"]],
   "wasm_traps": [["--wasm_trap_handler", "--invoke-weak-callbacks", "--wasm-jit-to-native"]],
+
+  # Alias of exhaustive variants, but triggering new test framework features.
+  "infra_staging": [[]],
 }
 
 # FAST_VARIANTS implies no --always-opt.

tools/testrunner/standard_runner.py

@@ -156,6 +156,8 @@ class StandardTestRunner(base_runner.BaseTestRunner):
       parser.add_option("--extra-flags",
                         help="Additional flags to pass to each test command",
                         action="append", default=[])
+      parser.add_option("--infra-staging", help="Use new test runner features",
+                        default=False, action="store_true")
       parser.add_option("--isolates", help="Whether to test isolates",
                         default=False, action="store_true")
       parser.add_option("-j", help="The number of parallel tasks to run",
@@ -300,6 +302,10 @@ class StandardTestRunner(base_runner.BaseTestRunner):
       # Use developer defaults if no variant was specified.
       options.variants = options.variants or "dev"
 
+      if options.variants == "infra_staging":
+        options.variants = "exhaustive"
+        options.infra_staging = True
+
       # Resolve variant aliases and dedupe.
       # TODO(machenbach): Don't mutate global variable. Rather pass mutated
       # version as local variable.