Automatic merge from submit-queue (batch tested with PRs 44412, 44810, 47130, 46017, 47829)

Use glog.*f when a format string is passed

ref:
https://godoc.org/github.com/golang/glog

I use the following commands to search all the invalid usage:
$ grep "glog.Warning(" * -r | grep %
$ grep "glog.Info(" * -r | grep %
$ grep "glog.Error(" * -r | grep %
$ grep ").Info(" * -r | grep % | grep glog.V(

**Release note**:

```
NONE
```