[minor] GRPC support takeover (#91)

* add grpc support for authorization-proxy

Signed-off-by: kpango <[email protected]>

* use ioutil.NopCLoser in test code

Signed-off-by: kevindiu <[email protected]>

* fix race error in test code

Signed-off-by: kevindiu <[email protected]>

* add grpc design doc

Signed-off-by: kevindiu <[email protected]>

* add grpc design doc

Signed-off-by: kevindiu <[email protected]>

* fix unit test

* typo

* fix conflict

* remove unused TLS

* fix typo

* update doc

Signed-off-by: kpango <[email protected]>
Signed-off-by: kevindiu <[email protected]>
Co-authored-by: kpango <[email protected]>
Co-authored-by: kevindiu <[email protected]>

[minor] add force content length option (#94), reverse (#97)

* add force content length

* add unit test

* fix comment

* Revert "[minor] add resource prefix config (#97)"

This reverts commit 028db59.

[minor] add resource prefix config (#97)

* add resource prefix config

* add unit test

* fix test

* upgrade authorizer

[patch] Update Dockerfile to restore USER (#95)

[patch] release (#93)

fix

[minor] proxy preserve host (#90)

* fix

* add log

* add preserve flag, fix logic

[patch] mask token signature in debug log, update go 1.16 (#88)

* update go 1.16

* fix test for 1.16, update authorizer

* patch version

* docker version

* fix test

* fix go.mod

[patch] update authorizer (#87)

* [patch] update authorizer

* fix sum

[patch] add omitempty (#85)

[minor] expose golang transport parameters to config.go