The details for the deployment & installation of this plugin were pretty much lifted directly from the
[Calico CNI plugin](https://github.com/projectcalico/cni-plugin).

Specifically:

- The CNI installation script is containerized and deployed as a daemonset in k8s.  The relevant calico k8s manifests were used as the model for the istio-cni plugin's manifest:

.PHONY: precommit format lint

# Target run by the pre-commit script, to automate formatting and lint
# If pre-commit script is not used, please run this manually.
precommit: format lint

format: fmt ## Auto formats all code. This should be run before sending a PR.

fmt: format-go format-python tidy-go

ifeq ($(DEBUG),1)
# gobuild script uses custom linker flag to set the variables.
RELEASE_LDFLAGS=''
else

		return checkBinDir(t, tempCNIBinDir, "add", "istio-cni")
	}, retry.Delay(time.Millisecond*10), retry.Timeout(time.Second*5))

	compareConfResult(resultFile, expectedOutputFile, t)

	// Test script restart by removing configuration
	if chainedCNIPlugin {
		rmCNIConfig(resultFile, t)
	} else if err := os.Remove(resultFile); err != nil {
		t.Fatalf("error removing CNI config file: %s", resultFile)
	}

		if len(cfg.CNIConfName) > 0 || !cfg.ChainedCNIPlugin {
			// Install was run with overridden CNI config file so don't error out on preempt check
			// Likely the only use for this is testing the script
			installLog.Warnf("CNI config file %s preempted by %s", cniConfigFilepath, defaultCNIConfigFilepath)
		} else {
			return fmt.Errorf("CNI config file %s preempted by %s", cniConfigFilepath, defaultCNIConfigFilepath)
		}