Changed name spaced event tag separator from "." to "/' dot to slash to enable
minion ids that are domain names inside tags.
Updated constant delimiter value
Also fixed fileserver tags that were not being created with tagify so that in the future
any changes are automatic.

In general users should use the tagify function to create tags to ensure
correct separators etc.
Merge pull request #7038 from SmithSamuelM/develop

Changed name spaced event tag separator from "." to "/' dot to slash