cachelib: regenerate github actions

Summary:
X-link: https://github.com/facebook/CacheLib/pull/388

Regenerate github actions.  Adds --runs-on arg to pass runs-on: parameter cachelib needs

Reviewed By: pbhandar2

Differential Revision: D75015742

fbshipit-source-id: af5803fa95fd4c2b9f25a7eaa817ffe2d135d23c

build/fbcode_builder/getdeps.py

@@ -1007,6 +1007,9 @@ class GenerateGitHubActionsCmd(ProjectCmdBase):
         if args.run_on_all_branches:
             return self.RUN_ON_ALL
         if args.cron:
+            if args.cron == "never":
+                return " {}"
+            else:
                 return f"""
   schedule:
     - cron: '{args.cron}'"""
@@ -1062,17 +1065,26 @@ class GenerateGitHubActionsCmd(ProjectCmdBase):
 
         if build_opts.is_linux():
             artifacts = "linux"
+            if args.runs_on:
+                runs_on = args.runs_on
+            else:
                 runs_on = f"ubuntu-{args.ubuntu_version}"
                 if args.cpu_cores:
                     runs_on = f"{args.cpu_cores}-core-ubuntu-{args.ubuntu_version}"
         elif build_opts.is_windows():
             artifacts = "windows"
+            if args.runs_on:
+                runs_on = args.runs_on
+            else:
                 runs_on = "windows-2019"
             # The windows runners are python 3 by default; python2.exe
             # is available if needed.
             py3 = "python"
         else:
             artifacts = "mac"
+            if args.runs_on:
+                runs_on = args.runs_on
+            else:
                 runs_on = "macOS-latest"
 
         os.makedirs(args.output_dir, exist_ok=True)
@@ -1366,9 +1378,13 @@ jobs:
             "--cpu-cores",
             help="Number of CPU cores to use (applicable for Linux OS)",
         )
+        parser.add_argument(
+            "--runs-on",
+            help="Allow specifying explicit runs-on: for github actions",
+        )
         parser.add_argument(
             "--cron",
-            help="Specify that the job runs on a cron schedule instead of on pushes",
+            help="Specify that the job runs on a cron schedule instead of on pushes. Pass never to disable the action.",
         )
         parser.add_argument(
             "--main-branch",