upgrade go bazel rules to in examples to fix bazel breaking release 0.18.6

[tejal29]

One of the integration tests failed with following error:

The issue is : bazelbuild/bazel#7793
Upgrading example should fix this.

ERROR: /root/.cache/bazel/_bazel_root/763bd7ff73f8885b0a98ed87a918afef/external/io_bazel_rules_go/BUILD.bazel:65:1: in go_context_data rule @io_bazel_rules_go//:go_context_data:
            Traceback (most recent call last):
            	File "/root/.cache/bazel/_bazel_root/763bd7ff73f8885b0a98ed87a918afef/external/io_bazel_rules_go/BUILD.bazel", line 65
            		go_context_data(name = 'go_context_data')
            	File "/root/.cache/bazel/_bazel_root/763bd7ff73f8885b0a98ed87a918afef/external/io_bazel_rules_go/go/private/context.bzl", line 396, in _go_context_data_impl
            		cc_common.configure_features(cc_toolchain = cc_toolchain, reque..., ...)
            Incompatible flag --incompatible_require_ctx_in_configure_features has been flipped, and the mandatory parameter 'ctx' of cc_common.configure_features is missing. Please add 'ctx' as a named parameter. See https://github.com/bazelbuild/bazel/issues/7793 for details.
            DEBUG: Rule 'org_golang_x_tools' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "2384fa91351a7414b643c5230422ce45f5aa2be8a82727609afd4e64e6973a30"
            DEBUG: Call stack for the definition of repository 'org_golang_x_tools' which is a http_archive (rule definition at /root/.cache/bazel/_bazel_root/763bd7ff73f8885b0a98ed87a918afef/external/bazel_tools/tools/build_defs/repo/http.bzl:237:16):
             - /root/.cache/bazel/_bazel_root/763bd7ff73f8885b0a98ed87a918afef/external/io_bazel_rules_go/go/private/repositories.bzl:199:9
             - /root/.cache/bazel/_bazel_root/763bd7ff73f8885b0a98ed87a918afef/external/io_bazel_rules_go/go/private/repositories.bzl:32:5
             - /go/src/github.com/GoogleContainerTools/skaffold/integration/examples/bazel/WORKSPACE:20:1
            INFO: Call stack for the definition of repository 'six' which is a http_archive (rule definition at /root/.cache/bazel/_bazel_root/763bd7ff73f8885b0a98ed87a918afef/external/bazel_tools/tools/build_defs/repo/http.bzl:237:16):
             - /root/.cache/bazel/_bazel_root/763bd7ff73f8885b0a98ed87a918afef/external/io_bazel_rules_docker/repositories/repositories.bzl:109:9
             - /root/.cache/bazel/_bazel_root/763bd7ff73f8885b0a98ed87a918afef/external/io_bazel_rules_docker/go/image.bzl:43:5
             - /go/src/github.com/GoogleContainerTools/skaffold/integration/examples/bazel/WORKSPACE:30:1
            ERROR: Analysis of target '//:skaffold_example.tar' failed; build aborted: Analysis of target '@io_bazel_rules_go//:go_context_data' failed; build aborted
            INFO: Elapsed time: 34.360s

[codecov]

Codecov Report

Merging #2311 into master will increase coverage by 0.01%.
The diff coverage is n/a.

Impacted Files	Coverage Δ
pkg/skaffold/jib/jib.go	78.49% <0%> (+1.07%)	⬆️

[chanseokoh]

The sha256 seems wrong.

ERROR: An error occurred during the fetch of repository 'io_bazel_rules_docker': com.google.devtools.build.lib.syntax.EvalException: Definition of repository io_bazel_rules_docker: Syntactically invalid SHA256 checksum: '5647f4f7a6b7c247e788675963e2e03a6e7156e1' at /go/src/github.com/GoogleContainerTools/skaffold/integration/examples/bazel/WORKSPACE:6:1

It should be 3556d4972571f288f8c43378295d84ed64fef5b1a875211ee1046f9f6b4258fa: https://github.com/bazelbuild/rules_docker#setup

[tejal29]

Thanks! updated it!

[priyawadhwa]

LGTM!