fixing build node and adding missing package for tosca e2e job

Change-Id: I2645b5c187813960de85420aa9203d0ac0add9d4
diff --git a/packer/provision/basebuild.sh b/packer/provision/basebuild.sh
index e5d8515..dfe66a7 100644
--- a/packer/provision/basebuild.sh
+++ b/packer/provision/basebuild.sh
@@ -92,6 +92,7 @@
         curl \
         git \
         golang-1.10-go \
+        httpie \
         "kubeadm=1.11.3-*" \
         "kubelet=1.11.3-*" \
         "kubectl=1.11.3-*" \