Add static code analysis to CI test (#1197)

hack/travis-kube-setup.sh

@@ -6,6 +6,22 @@
 
 set -e 
 
+TOOL_DIR=$HOME/tool
+
+if [ ! -d $TOOL_DIR ]
+then
+    mkdir -p $TOOL_DIR
+fi
+
+# Get staticcheck
+STATICCHECK_VERSION=2019.1.1
+if [ ! -f $TOOL_DIR/staticcheck ]
+then
+    curl -LO https://github.com/dominikh/go-tools/releases/download/${STATICCHECK_VERSION}/staticcheck_linux_amd64
+    chmod +x staticcheck_linux_amd64
+    mv staticcheck_linux_amd64 $TOOL_DIR/staticcheck
+fi
+
 K8SCLI_DIR=$HOME/k8scli
 
 if [ ! -d $K8SCLI_DIR ]
@@ -52,9 +68,6 @@ then
     curl https://sdk.cloud.google.com | bash
 fi
 
-# gcloud command
-export PATH=${HOME}/google-cloud-sdk/bin:${PATH}
-
 # ensure we have the gcloud binary
 gcloud version