fix: blobfuse install issue in blobfuse-proxy deployment

Author: andyzhangx

deploy/blobfuse-proxy/blobfuse-proxy.yaml

@@ -47,7 +47,7 @@ spec:
             if (( "${INSTALL_BLOBFUSE}" == "true" ))
             then
               dpkg -i /tmp/packages-microsoft-prod.deb
-              apt-get update && apt-get install -y blobfuse
+              apt-get install -y blobfuse
             fi
             dpkg -i /tmp/blobfuse-proxy-v0.1.0.deb
             mkdir -p /var/lib/kubelet/plugins/blob.csi.azure.com