[M118][infra] Use SSDs for 32-core linux builderless try builders.

The try builders that run on 32-core linux machines all have long build
times. The pool of non-SSD 32-core builderless linux machines is only 4
machines, which can often lead to pending when there are multiple deps
rolls since they often include linux_chromium_cfi_rel_ng,
linux-official, android-official and/or fuchsia-official. The pool of
SSD 32-core builderless try machines often sits unused because it is
primarily used by branch compilator builds. This will switch all of the
try builders targeting linux 32-core builderless machines to request the
ssd dimension to speed them up, then the existing non-SSD machines can
be switched over.

(cherry picked from commit d14defe)

Change-Id: Ic1144fb152f3bffaaec331d84f16909a651d7c25
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4973680
Reviewed-by: Struan Shrimpton <sshrimp@google.com>
Commit-Queue: Struan Shrimpton <sshrimp@google.com>
Auto-Submit: Garrett Beaty <gbeaty@google.com>
Cr-Original-Commit-Position: refs/heads/main@{#1214425}
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4977602
Cr-Commit-Position: refs/branch-heads/5993@{#1437}
Cr-Branched-From: 5113507-refs/heads/main@{#1192594}

infra/config/generated/luci/cr-buildbucket.cfg

@@ -10221,7 +10221,7 @@ buckets {
       dimensions: "cpu:x86-64"
       dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.chromium.try"
-      dimensions: "ssd:0"
+      dimensions: "ssd:1"
       exe {
         cipd_package: "infra/chromium/bootstrapper/${platform}"
         cipd_version: "latest"
@@ -12497,7 +12497,7 @@ buckets {
       dimensions: "cpu:x86-64"
       dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.chromium.try"
-      dimensions: "ssd:0"
+      dimensions: "ssd:1"
       exe {
         cipd_package: "infra/chromium/bootstrapper/${platform}"
         cipd_version: "latest"
@@ -14689,7 +14689,7 @@ buckets {
       dimensions: "cpu:x86-64"
       dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.chromium.try"
-      dimensions: "ssd:0"
+      dimensions: "ssd:1"
       exe {
         cipd_package: "infra/chromium/bootstrapper/${platform}"
         cipd_version: "latest"

infra/config/subprojects/chromium/try/tryserver.chromium.linux.star

@@ -498,6 +498,7 @@ try_.builder(
         "ci/Linux CFI",
     ],
     cores = 32,
+    ssd = True,
     # TODO(thakis): Remove once https://crbug.com/927738 is resolved.
     execution_timeout = 7 * time.hour,
     reclient_jobs = reclient.jobs.LOW_JOBS_FOR_CQ,
@@ -691,6 +692,7 @@ try_.builder(
     executable = "recipe:chromium_toolchain/package_clang",
     builderless = True,
     cores = 32,
+    ssd = True,
     execution_timeout = 5 * time.hour,
     notifies = ["chrome-rust-toolchain"],
 )
@@ -700,6 +702,7 @@ try_.builder(
     executable = "recipe:chromium_toolchain/package_rust",
     builderless = True,
     cores = 32,
+    ssd = True,
     execution_timeout = 5 * time.hour,
     notifies = ["chrome-rust-toolchain"],
 )

infra/config/subprojects/chromium/try/tryserver.chromium.star

@@ -36,6 +36,7 @@ try_.builder(
     mirrors = [
         "ci/android-official",
     ],
+    ssd = True,
 )
 
 try_.builder(
@@ -44,6 +45,7 @@ try_.builder(
     mirrors = [
         "ci/fuchsia-official",
     ],
+    ssd = True,
 )
 
 try_.builder(
@@ -52,6 +54,7 @@ try_.builder(
     mirrors = [
         "ci/linux-official",
     ],
+    ssd = True,
 )
 
 try_.builder(