fs: Update skipped file lock tests to match flock support

The list of platforms for which file locks are tested is smaller than
the list of platforms that support it. Synchronize these here.

Link: https://github.com/rust-lang/rust/blob/07bdbaedc63094281483c40a88a1a8f2f8ffadc5/library/std/src/sys/fs/unix.rs#L1291-L1308

Author: tgross35

library/std/src/fs/tests.rs

@@ -224,11 +224,15 @@ fn file_test_io_seek_and_write() {
 #[test]
 #[cfg(any(
     windows,
+    target_os = "aix",
+    target_os = "cygwin",
     target_os = "freebsd",
+    target_os = "fuchsia",
+    target_os = "illumos",
     target_os = "linux",
     target_os = "netbsd",
+    target_os = "openbsd",
     target_os = "solaris",
-    target_os = "illumos",
     target_vendor = "apple",
 ))]
 fn file_lock_multiple_shared() {
@@ -249,11 +253,15 @@ fn file_lock_multiple_shared() {
 #[test]
 #[cfg(any(
     windows,
+    target_os = "aix",
+    target_os = "cygwin",
     target_os = "freebsd",
+    target_os = "fuchsia",
+    target_os = "illumos",
     target_os = "linux",
     target_os = "netbsd",
+    target_os = "openbsd",
     target_os = "solaris",
-    target_os = "illumos",
     target_vendor = "apple",
 ))]
 fn file_lock_blocking() {
@@ -275,11 +283,15 @@ fn file_lock_blocking() {
 #[test]
 #[cfg(any(
     windows,
+    target_os = "aix",
+    target_os = "cygwin",
     target_os = "freebsd",
+    target_os = "fuchsia",
+    target_os = "illumos",
     target_os = "linux",
     target_os = "netbsd",
+    target_os = "openbsd",
     target_os = "solaris",
-    target_os = "illumos",
     target_vendor = "apple",
 ))]
 fn file_lock_drop() {
@@ -298,11 +310,15 @@ fn file_lock_drop() {
 #[test]
 #[cfg(any(
     windows,
+    target_os = "aix",
+    target_os = "cygwin",
     target_os = "freebsd",
+    target_os = "fuchsia",
+    target_os = "illumos",
     target_os = "linux",
     target_os = "netbsd",
+    target_os = "openbsd",
     target_os = "solaris",
-    target_os = "illumos",
     target_vendor = "apple",
 ))]
 fn file_lock_dup() {