nri: add experimental NRI plugin.

Add a common NRI 'service' plugin. It takes care of relaying
requests and respones to and from NRI (external NRI plugins)
and the high-level containerd namespace-independent logic of
applying NRI container adjustments and updates to actual CRI
and other containers.

The namespace-dependent details of the necessary container
manipulation operations are to be implemented by namespace-
specific adaptations. This NRI plugin defines the API which
such adaptations need to implement.

Signed-off-by: Krisztian Litkey <krisztian.litkey@intel.com>

vendor/modules.txt

@@ -59,9 +59,6 @@ github.com/Microsoft/hcsshim/pkg/ociwclayer
 # github.com/beorn7/perks v1.0.1
 ## explicit; go 1.11
 github.com/beorn7/perks/quantile
-# github.com/blang/semver v3.5.1+incompatible
-## explicit
-github.com/blang/semver
 # github.com/blang/semver/v4 v4.0.0
 ## explicit; go 1.14
 github.com/blang/semver/v4
@@ -129,9 +126,14 @@ github.com/containerd/go-runc
 ## explicit; go 1.16
 github.com/containerd/imgcrypt
 github.com/containerd/imgcrypt/images/encryption
-# github.com/containerd/nri v0.1.0
-## explicit; go 1.14
+# github.com/containerd/nri v0.2.0 => github.com/klihub/nri v0.0.0-20221122201439-2b09b4ad5cf3
+## explicit; go 1.18
 github.com/containerd/nri
+github.com/containerd/nri/pkg/adaptation
+github.com/containerd/nri/pkg/api
+github.com/containerd/nri/pkg/log
+github.com/containerd/nri/pkg/net
+github.com/containerd/nri/pkg/net/multiplex
 github.com/containerd/nri/types/v1
 # github.com/containerd/ttrpc v1.1.1-0.20220420014843-944ef4a40df3
 ## explicit; go 1.13
@@ -333,17 +335,14 @@ github.com/opencontainers/image-spec/specs-go/v1
 ## explicit; go 1.16
 github.com/opencontainers/runc/libcontainer/devices
 github.com/opencontainers/runc/libcontainer/user
-# github.com/opencontainers/runtime-spec v1.0.3-0.20210326190908-1c3f411f0417
+# github.com/opencontainers/runtime-spec v1.0.3-0.20220825212826-86290f6a00fb
 ## explicit
 github.com/opencontainers/runtime-spec/specs-go
-# github.com/opencontainers/runtime-tools v0.0.0-20190417131837-cd1349b7c47e
-## explicit
-github.com/opencontainers/runtime-tools/error
-github.com/opencontainers/runtime-tools/filepath
+# github.com/opencontainers/runtime-tools v0.9.0 => github.com/opencontainers/runtime-tools v0.0.0-20221026201742-946c877fa809
+## explicit; go 1.16
 github.com/opencontainers/runtime-tools/generate
 github.com/opencontainers/runtime-tools/generate/seccomp
-github.com/opencontainers/runtime-tools/specerror
-github.com/opencontainers/runtime-tools/validate
+github.com/opencontainers/runtime-tools/validate/capabilities
 # github.com/opencontainers/selinux v1.10.2
 ## explicit; go 1.13
 github.com/opencontainers/selinux/go-selinux
@@ -409,15 +408,6 @@ github.com/vishvananda/netlink/nl
 # github.com/vishvananda/netns v0.0.0-20210104183010-2eb08e3e575f
 ## explicit; go 1.12
 github.com/vishvananda/netns
-# github.com/xeipuuv/gojsonpointer v0.0.0-20180127040702-4e3ac2762d5f
-## explicit
-github.com/xeipuuv/gojsonpointer
-# github.com/xeipuuv/gojsonreference v0.0.0-20180127040603-bd5ef7bd5415
-## explicit
-github.com/xeipuuv/gojsonreference
-# github.com/xeipuuv/gojsonschema v1.2.0
-## explicit
-github.com/xeipuuv/gojsonschema
 # go.etcd.io/bbolt v1.3.6
 ## explicit; go 1.12
 go.etcd.io/bbolt
@@ -538,7 +528,7 @@ golang.org/x/text/unicode/norm
 # golang.org/x/time v0.0.0-20220210224613-90d013bbcef8
 ## explicit
 golang.org/x/time/rate
-# golang.org/x/tools v0.1.13-0.20221007141809-02bef08ac854
+# golang.org/x/tools v0.2.0
 ## explicit; go 1.18
 golang.org/x/tools/cmd/stringer
 golang.org/x/tools/go/gcexportdata
@@ -798,3 +788,5 @@ sigs.k8s.io/structured-merge-diff/v4/value
 # sigs.k8s.io/yaml v1.3.0
 ## explicit; go 1.12
 sigs.k8s.io/yaml
+# github.com/containerd/nri => github.com/klihub/nri v0.0.0-20221122201439-2b09b4ad5cf3
+# github.com/opencontainers/runtime-tools => github.com/opencontainers/runtime-tools v0.0.0-20221026201742-946c877fa809