log: [NPM] init telemetry before dataplane

[huntergregory]

Reason for Change:
Missing telemetry in case of a few potential errors during NPM bootup.

Issue Fixed:
Fixes #3145

Requirements:

• uses conventional commit messages
• includes documentation
• adds unit tests
• relevant PR labels added

Notes:

metrics.SendErrorLog() doesn't work as intended in these three places since telemetry is not initialized until later:

azure-container-networking/npm/cmd/start.go

Lines 239 to 240 in bbe5cb9

	if err != nil {
	metrics.SendErrorLogAndMetric(util.NpmID, "Error: failed to retrieving kubernetes version with err: %s", err.Error())

azure-container-networking/npm/cmd/start.go

Lines 184 to 186 in bbe5cb9

	nodeIP, err = util.NodeIP()
	if err != nil {
	metrics.SendErrorLogAndMetric(util.NpmID, "error: failed to get node IP while booting up: %v", err)

azure-container-networking/npm/cmd/start.go

Lines 193 to 195 in bbe5cb9

	dp, err = dataplane.NewDataPlane(models.GetNodeName(), common.NewIOShim(), npmV2DataplaneCfg, stopChannel)
	if err != nil {
	metrics.SendErrorLogAndMetric(util.NpmID, "error: failed to create dataplane with error %v", err)

[huntergregory]

/azp run Azure Container Networking PR

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[huntergregory]

/azp run NPM Conformance Tests

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).