Make clear which of the supported major versions is expected to be most stable

[kanevbg]

At this moment supported major versions are 5, 6 and 7. I was unable to understand the release model in terms of stability. Is release 5 expected to be more stable than 6?

[harigowtham]

We recommend using the latest version of Gluster as it is supposed to receive the most amount of fixes. Will mention this in the index of release-notes. Hope that would help. If not, please do suggest what can be done here.

[kanevbg]

@harigowtham Hello.
I see it as good place as you said "in the index of release-notes" to inform for this.
Getting more fixes can be interpreted as more buggy, so it should be exactly noted as most stable branch.