Update Makefile and add git pre-push hook (#1382)

hack/verify-govet.sh

@@ -4,4 +4,4 @@ set -o errexit
 set -o nounset
 set -o pipefail
 
-go vet -v $(go list ./...| grep -v vendor)
+go vet -v $(go list ./...| grep -v "vendor" | grep -v "examples" | grep -v "demos" | grep -v "test")

hack/verify-staticcheck.sh

@@ -4,6 +4,4 @@ set -o errexit
 set -o nounset
 set -o pipefail
 
-ROOT=`realpath $(dirname $0)/..`
-
-go list ./...| grep -v vendor | grep -v "examples" | grep -v "demos" | xargs -I@ staticcheck @
+go list ./...| grep -v vendor | grep -v "examples" | grep -v "demos" | grep -v "test" | xargs -I@ staticcheck @