Updated containerd1.7; google.golang.org/protobuf (microsoft#1706)

* Update containerd1.7; google.golang.org/protobuf

Update to containerd 1.7 and move to `google.golang.org/protobuf`
from `github.com/gogo/protobuf/gogoproto`.

These two changes are intertwined, since containerd 1.7 changes its
ttrpc task server definitions and protobuff generation (as well as some
other API changes).
Additionally, the task server gRPC code is imported from containerd
directly, rather than being generated here, and that code now explicitly
imports `google.golang.org/protobuf` instead of
`github.com/gogo/protobuf/gogoproto`.
Upgrading to `google.golang.org/protobuf` also requires updating
the `containerd/cgroups` dependency to v3
(`github.com/containerd/cgroups/v3/cgroup1/stats/`).

The new `protoc-gen-go-grpc` generators do not allow directives such as
`gogoproto.customname`, so the `go-fix-acronym` command is used to
update acronym customization (which is what containerd does).

Updated `Protobuild.toml` to specify new generators.

Added an `Update-Proto.ps1` script to re-generate protobuf files locally
and in GitHub CI.

Add `protobuild` and protobuff `grpc` and `ttrpc` generators to
`tools.go` so they are tracked and vendored, and can be trivially
installed via `go install`.

Signed-off-by: Hamza El-Saawy <hamzaelsaawy@microsoft.com>

* Vendor protobuf import changes

Signed-off-by: Hamza El-Saawy <hamzaelsaawy@microsoft.com>

---------

Signed-off-by: Hamza El-Saawy <hamzaelsaawy@microsoft.com>

computeagent/computeagent.proto

@@ -2,7 +2,6 @@ syntax = "proto3";
 
 option go_package = "github.com/Microsoft/hcsshim/internal/computeagent;computeagent";
 
-import weak "gogoproto/gogo.proto";
 import "google/protobuf/any.proto";
 
 service ComputeAgent{
@@ -17,7 +16,7 @@ message AssignPCIInternalRequest {
     string container_id = 1;
     string device_id = 2;
     uint32 virtual_function_index = 3;
-    string nic_id = 4; 
+    string nic_id = 4;
 }
 
 message AssignPCIInternalResponse {
@@ -58,6 +57,6 @@ message DeleteNICInternalResponse {}
 
 message IovSettings {
     uint32 IovOffloadWeight = 1;
-    uint32 QueuePairsRequested = 2; 
+    uint32 QueuePairsRequested = 2;
     uint32 InterruptModeration = 3;
 }

computeagent/doc.go

@@ -5,4 +5,4 @@
 // used for ncproxy.
 package computeagent
 
-//go:generate go run github.com/golang/mock/mockgen -source=computeagent.pb.go -package=computeagent_mock -destination=mock\computeagent_mock.pb.go
+//go:generate go run github.com/golang/mock/mockgen -source=computeagent_ttrpc.pb.go -package=computeagent_mock -destination=mock\computeagent_mock.pb.go