Running in a Private Network

[RobotSail]

We should introduce running the cluster in two modes:

• public (default)
• private

When an IPFSCluster resource runs in public network mode, pinned files are globally announced.

On the other hand, an IPFSCluster running in private mode will only be sharing files with itself across different nodes.
With the private mode, IPFSCluster is not very useful unless there are other IPFSCluster resources on other Kubernetes clusters which are able to reach them. Therefore, we want to be pulling in a secret via key reference and an IP4/IP6 address of the original IPFS Cluster peer