go.mod, vendor: update (#3358)

* go.mod, vendor: remove unnecessary dependencies

Commands:
1. go mod tidy
2. go mod vendor

* go.mod, vendor: update cloud.google.com/go

Commands:
1. go get -u cloud.google.com/go
2. go mod tidy
3. go mod vendor

* go.mod, vendor: update cloud.google.com/*

Commands:
1. go get -u cloud.google.com/storage cloud.google.com/logging
2. go mod tidy
3. go mod vendor

* go.mod, .golangci.yml, vendor: update *lint*

Commands:
1. go get -u golang.org/x/tools github.com/golangci/golangci-lint@v1.47.0
2. go mod tidy
3. go mod vendor
4. edit .golangci.yml to suppress new errors (resolved in the same PR later)

* all: fix lint errors

hash.go: copy() recommended by gosimple
parse.go: ent is never nil
verifier.go: signal.Notify() with unbuffered channel is bad. Have no idea why.

* .golangci.yml: adjust godot rules

check-all is deprecated, but still work
if you're hesitating too - I'll remove this commit

1 files changed, 61 insertions, 0 deletions

diff --git a/vendor/github.com/sylvia7788/contextcheck/README.md b/vendor/github.com/sylvia7788/contextcheck/README.md
new file mode 100644
index 000000000..dc951aca4
--- /dev/null
+++ b/vendor/github.com/sylvia7788/contextcheck/README.md
@@ -0,0 +1,61 @@
+[![CircleCI](https://circleci.com/gh/sylvia7788/contextcheck.svg?style=svg)](https://circleci.com/gh/sylvia7788/contextcheck)
+
+
+# contextcheck
+
+`contextcheck` is a static analysis tool, it is used to check the function whether use a non-inherited context, which will result in a broken call link.
+
+For example:
+
+```go
+func call1(ctx context.Context) {
+    ...
+
+    ctx = getNewCtx(ctx)
+    call2(ctx) // OK
+
+    call2(context.Background()) // Non-inherited new context, use function like `context.WithXXX` instead
+
+    call3() // Function `call3` should pass the context parameter
+    ...
+}
+
+func call2(ctx context.Context) {
+    ...
+}
+
+func call3() {
+    ctx := context.TODO()
+    call2(ctx)
+}
+
+func getNewCtx(ctx context.Context) (newCtx context.Context) {
+    ...
+    return
+}
+```
+
+## Installation
+
+You can get `contextcheck` by `go get` command.
+
+```bash
+$ go get -u github.com/sylvia7788/contextcheck
+```
+
+or build yourself.
+
+```bash
+$ make build
+$ make install
+```
+
+## Usage
+
+Invoke `contextcheck` with your package name
+
+```bash
+$ contextcheck ./...
+$ # or
+$ go vet -vettool=`which contextcheck` ./...
+```