Increase max instances to accommodate large scale cisco xrd topos

[alexmasi]

ERROR - Not enough inotify instance resource available for new XRd instance.
Current settings are 64000 max_user_instances and 1004879 max_user_watches.
Each XRd instance is expected to need 4000 of each - please consider
setting the limits high (e.g. 64000, or higher).

For a 32 CPU topo, an upper limit of 32 XRDs could fit. 32*4000=128000

[coveralls]

Pull Request Test Coverage Report for Build 9670094225

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 65.212%

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Totals
Change from base Build 9408903997:	0.0%
Covered Lines:	4647
Relevant Lines:	7126

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💛 - Coveralls