Add a new exporter type: DirectFLP

DirectFLP starts the whole flowlogs-pipeline process directly from the
Agent, eliminating the need for a network connection between them.

This can be useful when both Agent and FLP run on the same host, saving
resources. This is mutually exclusive with other exporters such as with
Kafka.

rollback e2e deps bump

Avoid pbuf conversion when using direct-flp

Clarify test file name, use existing ipv6 const

Restore L2 drops

go.mod

@@ -23,73 +23,97 @@ require (
 	golang.org/x/sys v0.14.1-0.20231108175955-e4099bfacb8c
 	google.golang.org/grpc v1.59.0
 	google.golang.org/protobuf v1.31.0
+	gopkg.in/yaml.v2 v2.4.0
 	k8s.io/api v0.28.4
 	k8s.io/apimachinery v0.28.4
 	k8s.io/client-go v0.28.4
 	sigs.k8s.io/e2e-framework v0.3.0
 )
 
 require (
+	github.com/Knetic/govaluate v3.0.1-0.20171022003610-9aa49832a739+incompatible // indirect
+	github.com/benbjohnson/clock v1.3.5 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/cespare/xxhash/v2 v2.2.0 // indirect
-	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
+	github.com/dustin/go-humanize v1.0.1 // indirect
 	github.com/emicklei/go-restful/v3 v3.10.2 // indirect
 	github.com/evanphx/json-patch/v5 v5.6.0 // indirect
+	github.com/go-kit/kit v0.13.0 // indirect
+	github.com/go-kit/log v0.2.1 // indirect
+	github.com/go-logfmt/logfmt v0.5.1 // indirect
 	github.com/go-logr/logr v1.2.4 // indirect
 	github.com/go-openapi/jsonpointer v0.19.6 // indirect
 	github.com/go-openapi/jsonreference v0.20.2 // indirect
 	github.com/go-openapi/swag v0.22.3 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/golang/protobuf v1.5.3 // indirect
+	github.com/golang/snappy v0.0.4 // indirect
 	github.com/google/gnostic-models v0.6.8 // indirect
 	github.com/google/go-cmp v0.5.9 // indirect
 	github.com/google/gofuzz v1.2.0 // indirect
 	github.com/google/uuid v1.3.1 // indirect
+	github.com/heptiolabs/healthcheck v0.0.0-20211123025425-613501dd5deb // indirect
 	github.com/imdario/mergo v0.3.15 // indirect
+	github.com/ip2location/ip2location-go/v9 v9.6.0 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/jpillora/backoff v1.0.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
-	github.com/klauspost/compress v1.15.13 // indirect
+	github.com/klauspost/compress v1.17.0 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.5 // indirect
+	github.com/libp2p/go-reuseport v0.3.0 // indirect
 	github.com/mailru/easyjson v0.7.7 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
+	github.com/minio/md5-simd v1.1.2 // indirect
+	github.com/minio/minio-go/v7 v7.0.63 // indirect
+	github.com/minio/sha256-simd v1.0.1 // indirect
+	github.com/mitchellh/mapstructure v1.5.0 // indirect
 	github.com/moby/spdystream v0.2.0 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
 	github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f // indirect
+	github.com/netobserv/loki-client-go v0.0.0-20220927092034-f37122a54500 // indirect
+	github.com/netsampler/goflow2 v1.3.6 // indirect
 	github.com/pierrec/lz4/v4 v4.1.17 // indirect
 	github.com/pion/dtls/v2 v2.2.4 // indirect
 	github.com/pion/logging v0.2.2 // indirect
 	github.com/pion/transport/v2 v2.0.0 // indirect
 	github.com/pion/udp v0.1.4 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
-	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/prometheus/client_golang v1.15.1 // indirect
-	github.com/prometheus/client_model v0.4.0 // indirect
-	github.com/prometheus/common v0.42.0 // indirect
-	github.com/prometheus/procfs v0.9.0 // indirect
+	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
+	github.com/prometheus/client_golang v1.17.0 // indirect
+	github.com/prometheus/client_model v0.4.1-0.20230718164431-9a2bf3000d16 // indirect
+	github.com/prometheus/common v0.44.0 // indirect
+	github.com/prometheus/procfs v0.11.1 // indirect
+	github.com/prometheus/prometheus v1.8.2-0.20201028100903-3245b3267b24 // indirect
+	github.com/rs/xid v1.5.0 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
+	github.com/stretchr/objx v0.5.0 // indirect
 	github.com/xdg-go/pbkdf2 v1.0.0 // indirect
 	github.com/xdg-go/scram v1.1.2 // indirect
 	github.com/xdg-go/stringprep v1.0.4 // indirect
+	go.uber.org/atomic v1.9.0 // indirect
 	golang.org/x/crypto v0.14.0 // indirect
-	golang.org/x/exp v0.0.0-20230321023759-10a507213a29 // indirect
+	golang.org/x/exp v0.0.0-20230905200255-921286631fa9 // indirect
 	golang.org/x/net v0.17.0 // indirect
-	golang.org/x/oauth2 v0.11.0 // indirect
+	golang.org/x/oauth2 v0.12.0 // indirect
 	golang.org/x/term v0.13.0 // indirect
 	golang.org/x/text v0.13.0 // indirect
 	golang.org/x/time v0.3.0 // indirect
-	golang.org/x/tools v0.11.0 // indirect
 	google.golang.org/appengine v1.6.7 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20230822172742-b8732ec3820d // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20230920204549-e6e6cdab5c13 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect
-	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gopkg.in/ini.v1 v1.67.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 	k8s.io/klog/v2 v2.100.1 // indirect
 	k8s.io/kube-openapi v0.0.0-20230717233707-2695361300d9 // indirect
 	k8s.io/utils v0.0.0-20230406110748-d93618cff8a2 // indirect
+	lukechampine.com/uint128 v1.2.0 // indirect
 	sigs.k8s.io/controller-runtime v0.15.1 // indirect
 	sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd // indirect
 	sigs.k8s.io/structured-merge-diff/v4 v4.2.3 // indirect
 	sigs.k8s.io/yaml v1.3.0 // indirect
 )
+
+replace github.com/netobserv/flowlogs-pipeline => ../flowlogs-pipeline