Identity and Agent enhancements (pt.3) + Cfcli update

[LorenzoTettamanti]

This PR introduces a new set of features and fixes for the existing issues: [#123] [#92] [#93][#130].

Changelog:
CLI:

• Added new CLI command: cfcli monitoring list (return the list of available gRPC API endpoints)
• Added new CLI command: cfcli monitoring connections (return the latest connections detected by the identity service)
• Updated installation command:
  1. Added cfcli install cortexflow command to install all the cortexbrain components
  2. Added cfcli install simple-example to install test pods

Agent:

• Updated agent protobuf file
• Added an EventSender trait to send the events from the bpf_maps to the CLI using an MPSC architecture
• Updated agent.yaml manifest

Identity:

• Updated map pinner function
• updated identity.yaml manifest

General:

• Added build-all.sh to build and push all the core docker images

Installation/Tests:

• Install the cortexflow-agent using the agent.yaml file
• [Recommended] Install the identity service using the cli or the identity.yaml file
• Test the new CLI functions directly from the cli directory (CortexBrain/cli):
  cargo run monitoring list
cargo run monitoring connections

Expected result:
cargo run monitoring list

[SYSTEM] Founded config files
[SYSTEM] Readed configs for env variable: "Kubernetes"
=====> Connected to CortexFlow Server Reflection
Available services:
ActiveConnections

cargo run monitoring connections

Example:
{""62"": ""67.120.244.10"", ""294209"": ""65.120.244.10"", ""294054"": ""68.120.244.10"", ""314239"": ""67.120.244.10"", ""312314"": ""68.120.244.10"", ""294145"": ""65.120.244.10"", ""300935"": ""66.120.244.10"", ""300840"": ""65.120.244.10"", ""294111"": ""66.120.244.10"", ""312315"": ""68.120.244.10"", ""294153"": ""65.120.244.10"", ""300940"": ""66.120.244.10"", ""0"": ""66.120.244.10"", ""294071"": ""67.120.244.10"", ""312319"": ""68.120.244.10"", ""294155"": ""67.120.244.10"", ""312018"": ""67.120.244.10"", ""312020"": ""67.120.244.10"", ""294151"": ""67.120.244.10"", ""300938"": ""66.120.244.10"", ""302296"": ""65.120.244.10"", ""314240"": ""67.120.244.10"", ""300860"": ""65.120.244.10"", ""312318"": ""68.120.244.10"", ""294211"": ""68.120.244.10"", ""294154"": ""65.120.244.10"", ""294159"": ""65.120.244.10"", ""300871"": ""65.120.244.10"", ""300872"": ""65.120.244.10"", ""307618"": ""67.120.244.10"", ""294149"": ""65.120.244.10"", ""300933"": ""66.120.244.10"", ""312298"": ""68.120.244.10"", ""294053"": ""68.120.244.10"", ""312312"": ""68.120.244.10"", "0": "0", ""312313"": ""68.120.244.10"", ""294173"": ""65.120.244.10"", ""294080"": ""68.120.244.10"", ""312316"": ""68.120.244.10""}

Notes:
Tested using minikube with calico cnI

CLi tests:

Agent Backend:

[LorenzoTettamanti]

@siddh34 Edit: if the identity service returns "Error while pinning bpf_maps: BPF_OBJ_PIN failed" this is a temporary fix:

• Access the cluster using the bpftool-control-manager container (you can find it in the identity pod)
• delete the maps directory in /sys/fs/bpf
• restart the identity service

This is just a temporary fix

[siddh34]

Working as expected!

Good work man!

@LorenzoTettamanti

[LorenzoTettamanti]

Thanks mate! I'm merging the changes🚀🚀