Local GoKart (#603)

related to #600
I was looking to see if GoKArt is part of golang-ci - not at the moment.
I have added a make target gokart. Static analysis came out very well, no code changes needed.
GoKart is checking code including imported packages, see output:

```shell
Using config found at /Users/ab011th/.gokart/analyzers.yml

Revving engines VRMMM VRMMM
3...2...1...Go!

Race Complete! Analysis took 1.862020787s and 569 Go files were scanned (including imported packages)
GoKart found 0 potentially vulnerable functions
```

Signed-off-by: kuritka <kuritka@gmail.com>

Makefile

@@ -38,6 +38,7 @@ LOG_FORMAT ?= simple
 LOG_LEVEL ?= debug
 CONTROLLER_GEN_VERSION  ?= v0.4.1
 GOLIC_VERSION  ?= v0.5.0
+GOKART_VERSION ?= v0.2.0
 POD_NAMESPACE ?= k8gb
 CLUSTER_GEO_TAG ?= eu
 EXT_GSLB_CLUSTERS_GEO_TAGS ?= us
@@ -91,7 +92,7 @@ all: help
 
 # check integrity
 .PHONY: check
-check: license lint test ## Check project integrity
+check: license lint gokart test ## Check project integrity
 
 .PHONY: clean-test-apps
 clean-test-apps:
@@ -257,6 +258,12 @@ infoblox-secret:
 		--from-literal=EXTERNAL_DNS_INFOBLOX_WAPI_USERNAME=$${WAPI_USERNAME} \
 		--from-literal=EXTERNAL_DNS_INFOBLOX_WAPI_PASSWORD=$${WAPI_PASSWORD}
 
+# GoKart - Go Security Static Analysis
+# see: https://github.com/praetorian-inc/gokart
+.PHONY: gokart
+gokart:
+	$(call gokart,--globalsTainted --verbose)
+
 # updates source code with license headers
 .PHONY: license
 license:
@@ -467,6 +474,11 @@ define controller-gen
 	$(GOBIN)/controller-gen $1
 endef
 
+define gokart
+	@go install github.com/praetorian-inc/gokart@$(GOKART_VERSION)
+	$(GOBIN)/gokart scan $1
+endef
+
 define golic
 	@go install github.com/AbsaOSS/golic@$(GOLIC_VERSION)
 	$(GOBIN)/golic inject $1