bazel: Allow to distdir all dependencies (#4779)

To use --distdir option of Bazel (which allows to use previously
fetched tarballs instead of downloading dependencies during
build), all dependencies should use http instead of git and need
to have sha256 sums specified.

Risk Level: low
Testing: n/a
Docs Changes: updated bazel/EXTERNAL_DEPS.md
Release Notes: n/a

Signed-off-by: Michal Rostecki <mrostecki@suse.de>

Mirrored from https://github.com/envoyproxy/envoy @ dc0d35b9ed93b4f5d2ad83f6a7e78832504aeeea

bazel/repositories.bzl

@@ -4,31 +4,39 @@ BAZEL_SKYLIB_SHA256 = "b5f6abe419da897b7901f90cbab08af958b97a8f3575b0d3dd062ac7c
 GOGOPROTO_RELEASE = "1.1.1"
 GOGOPROTO_SHA256 = "9f8c2ad49849ab063cd9fef67e77d49606640044227ecf7f3617ea2c92ef147c"
 
-GOOGLEAPIS_SHA = "d642131a6e6582fc226caf9893cb7fe7885b3411"  # May 23, 2018
+GOOGLEAPIS_GIT_SHA = "d642131a6e6582fc226caf9893cb7fe7885b3411"  # May 23, 2018
-PROMETHEUS_SHA = "99fa1f4be8e564e8a6b613da7fa6f46c9edafc6c"  # Nov 17, 2017
+GOOGLEAPIS_SHA = "16f5b2e8bf1e747a32f9a62e211f8f33c94645492e9bbd72458061d9a9de1f63"
-OPENCENSUS_SHA = "ab82e5fdec8267dc2a726544b10af97675970847"  # May 23, 2018
+
+PROMETHEUS_GIT_SHA = "99fa1f4be8e564e8a6b613da7fa6f46c9edafc6c"  # Nov 17, 2017
+PROMETHEUS_SHA = "783bdaf8ee0464b35ec0c8704871e1e72afa0005c3f3587f65d9d6694bf3911b"
+
+OPENCENSUS_GIT_SHA = "ab82e5fdec8267dc2a726544b10af97675970847"  # May 23, 2018
+OPENCENSUS_SHA = "1950f844d9f338ba731897a9bb526f9074c0487b3f274ce2ec3b4feaf0bef7e2"
 
 PGV_GIT_SHA = "30da78c4bcdd477b3c24d13e43cf39361ae3859f"  # Sep 27, 2018
+PGV_SHA = "2bc9a34b1c485e73540dc5093d6715ef437294020fa6580f21306aa5e884f511"
 
-load("@bazel_tools//tools/build_defs/repo:git.bzl", "git_repository")
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 
 def api_dependencies():
-    native.http_archive(
+    http_archive(
         name = "bazel_skylib",
         sha256 = BAZEL_SKYLIB_SHA256,
         strip_prefix = "bazel-skylib-" + BAZEL_SKYLIB_RELEASE,
         url = "https://github.com/bazelbuild/bazel-skylib/archive/" + BAZEL_SKYLIB_RELEASE + ".tar.gz",
     )
-    git_repository(
+    http_archive(
         name = "com_lyft_protoc_gen_validate",
-        remote = "https://github.com/lyft/protoc-gen-validate.git",
+        url = "https://github.com/lyft/protoc-gen-validate/archive/" + PGV_GIT_SHA + ".tar.gz",
-        commit = PGV_GIT_SHA,
+        sha256 = PGV_SHA,
+        strip_prefix = "protoc-gen-validate-" + PGV_GIT_SHA,
     )
-    native.new_http_archive(
+    http_archive(
         name = "googleapis",
-        strip_prefix = "googleapis-" + GOOGLEAPIS_SHA,
+        strip_prefix = "googleapis-" + GOOGLEAPIS_GIT_SHA,
-        url = "https://github.com/googleapis/googleapis/archive/" + GOOGLEAPIS_SHA + ".tar.gz",
+        url = "https://github.com/googleapis/googleapis/archive/" + GOOGLEAPIS_GIT_SHA + ".tar.gz",
         # TODO(dio): Consider writing a Skylark macro for importing Google API proto.
+        sha256 = GOOGLEAPIS_SHA,
         build_file_content = """
 load("@com_google_protobuf//:protobuf.bzl", "cc_proto_library", "py_proto_library")
 load("@io_bazel_rules_go//proto:def.bzl", "go_proto_library")
@@ -189,7 +197,7 @@ py_proto_library(
 """,
     )
 
-    native.new_http_archive(
+    http_archive(
         name = "com_github_gogo_protobuf",
         sha256 = GOGOPROTO_SHA256,
         strip_prefix = "protobuf-" + GOGOPROTO_RELEASE,
@@ -250,10 +258,11 @@ py_proto_library(
         """,
     )
 
-    native.new_http_archive(
+    http_archive(
         name = "prometheus_metrics_model",
-        strip_prefix = "client_model-" + PROMETHEUS_SHA,
+        strip_prefix = "client_model-" + PROMETHEUS_GIT_SHA,
-        url = "https://github.com/prometheus/client_model/archive/" + PROMETHEUS_SHA + ".tar.gz",
+        url = "https://github.com/prometheus/client_model/archive/" + PROMETHEUS_GIT_SHA + ".tar.gz",
+        sha256 = PROMETHEUS_SHA,
         build_file_content = """
 load("@envoy_api//bazel:api_build_system.bzl", "api_proto_library")
 load("@io_bazel_rules_go//proto:def.bzl", "go_proto_library")
@@ -275,10 +284,11 @@ go_proto_library(
         """,
     )
 
-    native.new_http_archive(
+    http_archive(
         name = "io_opencensus_trace",
-        strip_prefix = "opencensus-proto-" + OPENCENSUS_SHA + "/opencensus/proto/trace",
+        strip_prefix = "opencensus-proto-" + OPENCENSUS_GIT_SHA + "/opencensus/proto/trace",
-        url = "https://github.com/census-instrumentation/opencensus-proto/archive/" + OPENCENSUS_SHA + ".tar.gz",
+        url = "https://github.com/census-instrumentation/opencensus-proto/archive/" + OPENCENSUS_GIT_SHA + ".tar.gz",
+        sha256 = OPENCENSUS_SHA,
         build_file_content = """
 load("@envoy_api//bazel:api_build_system.bzl", "api_proto_library")
 load("@io_bazel_rules_go//proto:def.bzl", "go_proto_library")