Fixed and renovated Rust example 08 grpc. (#492)

Fixed and renovaeted rust-examples/08-grpc-client-server/
Resolves:
#489 (comment)

The CI failure of the example was caused by a bizarre issue that only
occurs on linux, as documented
bazelbuild/rules_rust#2806

I've applied the known fix. Furthermore, the cause of the issue seems to
be a change in the format of how aliases
are generated for downloaded dependencies referenced in the example. To
prevent this from ever happening again, I've vendored all dependencies
and updated the Bazel build files accordingly.

---------

Signed-off-by: Marvin Hansen <[email protected]>

.bazelci/tutorial-rust.yml

@@ -48,19 +48,18 @@ tasks:
     working_directory: ../rust-examples/07-deps-vendor
     build_targets:
       - "//..."
-  # TODO: Renable after addressing https://github.com/bazelbuild/examples/pull/489#issuecomment-2321617323
-  # rust-08-grpc-client-server-linux:
-  #   name: "Rust grpc"
-  #   platform: ubuntu2204
-  #   working_directory: ../rust-examples/08-grpc-client-server
-  #   build_targets:
-  #     - "//:all"
+  rust-08-grpc-client-server-linux:
+     name: "Rust grpc"
+     platform: ubuntu2204
+     working_directory: ../rust-examples/08-grpc-client-server
+     build_targets:
+       - "//..."
   rust-08-grpc-client-server-macos:
     name: "Rust grpc"
     platform: macos_arm64
     working_directory: ../rust-examples/08-grpc-client-server
     build_targets:
-      - "//:all"
+      - "//..."
   rust-09-oci-container-linux:
     name: "Rust OCI"
     platform: ubuntu2204

rust-examples/08-grpc-client-server/BUILD.bazel

@@ -4,11 +4,3 @@ config_setting(
         "compilation_mode": "opt",
     },
 )
-
-filegroup(
-    name = "all",
-    srcs = [
-        "//grpc_client:bin",
-        "//grpc_server:bin",
-    ],
-)