Missing newline in JSON stream from proxy API pin/ls

[StrathCole]

Additional information:

• OS: Linux
• IPFS Cluster version: 1.0.6
• Installation method: binary

Describe the bug:

When calling the proxy API for pin/ls on port 9095, the returned format is not a valid newline-separated JSON.
Entries are returned like:
curl -X POST "http://127.0.0.1:9095/api/v0/pin/ls?type=recursive&stream=true"

{"Cid":"QmRcYpbiapVNstWVWvLRgvkvWXm5zKHawMFy7cFpRYfMFz","Type":"recursive"}{"Cid":"QmcVrQjK7FLFzefChixfBdTaCqjdr5hPb5yp44m7NUti1m","Type":"recursive"}{"Cid":"QmUfyBTHzrdGCrnPnHf6Fxhw4CkFDUKSKNUW6PcjMUxdwh","Type":"recursive"}{"Cid":"QmWRnA8LATY96xK7kAL9mW7hoABHvNXSCcQmrtSUKmvLw5","Type":"recursive"}{"Cid":"QmeXqon4zfscwoRCeebCcMLRA7xrHM6bhF4xa8Fd5oZ9s5","Type":"recursive"}{"Cid":"QmTt3B3qe1PcjdVjNh7pWJb1hrotacNYoQn63aXcxS4JJJ","Type":"recursive"}

While the original API of the ipfs on port 5001 returns data like this:
curl -X POST "http://127.0.0.1:5001/api/v0/pin/ls?type=recursive&stream=true"

{"Cid":"QmRg2YqDzwUrCQYpcuU69YcJZ9X2j2WyixBRi1YVbzetcZ","Type":"recursive"}
{"Cid":"QmTVmr6QhX1kkZ7YYJR8qebxb5XdwfJNexwZTvXuiAWt7b","Type":"recursive"}
{"Cid":"QmVVZ9B3hyYgDHHQLr3b79nHd37udq3NfkxaUYiRV8vEm4","Type":"recursive"}
{"Cid":"QmdJmmC5iyU17vSduESHkiDG5SvPSy785papnKvdZRftSZ","Type":"recursive"}
{"Cid":"QmRxGPcA5SYk2bUYpkczGCM7uEVwY8YgNPD4cY4HG5HRXC","Type":"recursive"}
{"Cid":"QmQFVNxoJuwmRMQm1vYMCf2pRCr4AgcGGYxVjK5MyLyTbp","Type":"recursive"}
{"Cid":"QmQNQrmieaHzf2Pn3rr7x5qkzTgKB9r62JPhJXLhvmZTiF","Type":"recursive"}

It seams that this leads to problems with clients (e.g. webui) parsing the JSON stream.