Merge pull request #61800 from rithujohn191/remove-gopass

Automatic merge from submit-queue (batch tested with PRs 61818, 61800). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Replace gopass.GetPasswdMasked() by terminal.ReadPassword()

**What this PR does / why we need it**:
Replace `gopass.GetPasswdMasked()` used for reading passwords from the terminal with [`terminal.ReadPassword()`](https://godoc.org/golang.org/x/crypto/ssh/terminal#ReadPassword). This removes the `gopass` import.

**Special notes for your reviewer**:
Ran the following commands to update `godep` files:
```
./hack/godep-restore.sh -v
./hack/godep-save.sh
./hack/update-staging-godeps.sh
./hack/update-bazel.sh
```

/sig auth
/kind enhancement
/assign @ericchiang

```release-note
NONE
```

Godeps/Godeps.json

@@ -2007,10 +2007,6 @@
 			"Comment": "v4.0.0-95-gaaf4061",
 			"Rev": "aaf40619d85fda757e7a1c1ea1b5118cea65594b"
 		},
-		{
-			"ImportPath": "github.com/howeyc/gopass",
-			"Rev": "bf9dde6d0d2c004a008c27aaee91170c786f6db8"
-		},
 		{
 			"ImportPath": "github.com/imdario/mergo",
 			"Comment": "0.1.3-8-g6633656",

Godeps/LICENSES

@@ -70652,29 +70652,6 @@ under a dual license of LGPLv3+ or GPLv2.
 ================================================================================
 
 
-================================================================================
-= vendor/github.com/howeyc/gopass licensed under: =
-
-ISC License
-
-Copyright (c) 2012 Chris Howey
-
-Permission to use, copy, modify, and distribute this software for any
-purpose with or without fee is hereby granted, provided that the above
-copyright notice and this permission notice appear in all copies.
-
-THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-
-= vendor/github.com/howeyc/gopass/LICENSE.txt b24abd09a925eaf2b6de5a9b4c9bea07
-================================================================================
-
-
 ================================================================================
 = vendor/github.com/imdario/mergo licensed under: =