update packer-vultr plugin

bin/install_packer.sh

@@ -19,7 +19,7 @@ fi
 
 # Install packer Vultr plugin
 if [[ ! -f ${HOME}/.packer.d/plugins/packer-builder-vultr ]] ; then
-  PACKER_VULTR_VERSION=1.0.8
+  PACKER_VULTR_VERSION=1.0.11
   PACKER_VULTR_FILE=packer-builder-vultr_${PACKER_VULTR_VERSION}_linux_64-bit.tar.gz
   PACKER_VULTR_URL=https://github.com/vultr/packer-builder-vultr/releases/download/v${PACKER_VULTR_VERSION}/${PACKER_VULTR_FILE}
   mkdir -p ${HOME}/.packer.d/plugins && cd ${HOME}/.packer.d/plugins && wget ${PACKER_VULTR_URL} && tar xzf ${PACKER_VULTR_FILE}  || die "Error installing packer vultr plugin"