[antlir][c8 eol][1/n] Clean up C8 references

Summary: chunked it up across a few diffs to make it more reviewable

Test Plan: ci

Reviewed By: vmagro

Differential Revision: D66776434

fbshipit-source-id: d916dc5e0de05d4f1422da1d645f8290f133e69b

antlir/antlir2/test_images/cfg/configured_alias/BUCK

@@ -6,30 +6,30 @@ oncall("antlir")
 export_file(
     name = "f",
     src = select({
-        "//antlir/antlir2/os:centos8": "c8",
+        "//antlir/antlir2/os:centos10": "c10",
         "//antlir/antlir2/os:centos9": "c9",
         "DEFAULT": "default",
     }),
 )
 
 antlir2_configured_alias(
-    name = "f.c8",
+    name = "f.c9",
     actual = ":f",
-    default_os = "centos8",
+    default_os = "centos9",
 )
 
 antlir2_configured_alias(
-    name = "f.c9",
+    name = "f.c10",
     actual = ":f",
-    default_os = "centos9",
+    default_os = "centos10",
 )
 
 python_unittest(
     name = "test",
     srcs = ["test.py"],
     resources = {
         ":f": "f.default",
-        ":f.c8": "f.centos8",
+        ":f.c10": "f.centos10",
         ":f.c9": "f.centos9",
     },
 )

antlir/antlir2/test_images/cfg/configured_alias/c10

@@ -0,0 +1 @@
+centos10

antlir/antlir2/test_images/cfg/configured_alias/test.py

@@ -12,6 +12,6 @@ def setUp(self) -> None:
         super().setUp()
 
     def test_configured_alias(self) -> None:
-        for variant in ["centos8", "centos9", "default"]:
+        for variant in ["centos9", "centos10", "default"]:
             with self.subTest(variant):
                 self.assertEqual(variant + "\n", read_text(__package__, "f." + variant))

antlir/bzl/linux/tests/BUCK

@@ -1,7 +1,6 @@
 load("//antlir/antlir2/bzl/feature:defs.bzl", "feature")
 load("//antlir/antlir2/bzl/image:defs.bzl", "image")
 load("//antlir/antlir2/testing:image_test.bzl", "image_python_test")
-load("//antlir/bzl:build_defs.bzl", "is_facebook")
 load("//antlir/bzl/linux:defs.bzl", "linux")
 
 oncall("antlir")
@@ -129,14 +128,3 @@ image_python_test(
         "//antlir:fs_utils",
     ],
 )
-
-image_python_test(
-    name = "test-os-release-c8",
-    srcs = ["test_os_release.py"],
-    default_os = "centos8",
-    env = {"CENTOS": "8"},
-    layer = ":test-layer-os-release",
-    deps = [
-        "//antlir:fs_utils",
-    ],
-) if is_facebook else None