Update sonobuoy to v0.16.2

Dockerfile.sonobuoy.dapper

 FROM golang:1.13.1-alpine3.10
 
 RUN apk -U --no-cache add bash git gcc musl-dev docker curl jq coreutils
-RUN go get -d github.com/heptio/sonobuoy && \
-    git -C /go/src/github.com/heptio/sonobuoy checkout -b current v0.16.1 && \
-    go install github.com/heptio/sonobuoy
+RUN SONOBUOY_VER=v0.16.2 && \
+    SONOBUOY_PKG=github.com/vmware-tanzu/sonobuoy && \
+    go get -d ${SONOBUOY_PKG} && \
+    cd /go/src/${SONOBUOY_PKG} && \
+    git checkout -b current ${SONOBUOY_VER} && \
+    go build -o /usr/local/bin/sonobuoy
 RUN rm -rf /go/src /go/pkg
 
 ARG DAPPER_HOST_ARCH