Moving diagnostics into a service (#14832)

* Moving diagnostics into a service

* Fixing golint checks

* Fixing tests

* Renaming from diagnostics to telemetry

* Adding missing files

* Initializing telemetry earlier in the server startup

* Fixing tests

* Adding a log for the telemetryID initialization error

* Addressing PR review comments

* Fixing merge problem

* Removing some extra Diagnostics mentions

* Making tests pass

config/client_test.go

@@ -18,7 +18,7 @@ func TestGetClientConfig(t *testing.T) {
 	testCases := []struct {
 		description    string
 		config         *model.Config
-		diagnosticID   string
+		telemetryID    string
 		license        *model.License
 		expectedFields map[string]string
 	}{
@@ -190,7 +190,7 @@ func TestGetClientConfig(t *testing.T) {
 				testCase.license.Features.SetDefaults()
 			}
 
-			configMap := config.GenerateClientConfig(testCase.config, testCase.diagnosticID, testCase.license)
+			configMap := config.GenerateClientConfig(testCase.config, testCase.telemetryID, testCase.license)
 			for expectedField, expectedValue := range testCase.expectedFields {
 				actualValue, ok := configMap[expectedField]
 				if assert.True(t, ok, fmt.Sprintf("config does not contain %v", expectedField)) {
@@ -206,7 +206,7 @@ func TestGetLimitedClientConfig(t *testing.T) {
 	testCases := []struct {
 		description    string
 		config         *model.Config
-		diagnosticID   string
+		telemetryID    string
 		license        *model.License
 		expectedFields map[string]string
 	}{
@@ -269,7 +269,7 @@ func TestGetLimitedClientConfig(t *testing.T) {
 				testCase.license.Features.SetDefaults()
 			}
 
-			configMap := config.GenerateLimitedClientConfig(testCase.config, testCase.diagnosticID, testCase.license)
+			configMap := config.GenerateLimitedClientConfig(testCase.config, testCase.telemetryID, testCase.license)
 			for expectedField, expectedValue := range testCase.expectedFields {
 				actualValue, ok := configMap[expectedField]
 				if assert.True(t, ok, fmt.Sprintf("config does not contain %v", expectedField)) {