deploy templates: increase default npn number for mmnet-model

[algorandskiy]

Summary

Default 5 npn appears too small to produce enough load for max TPS tests so set to 10

Test Plan

Manual test

[algobarb]

actually, do we need to update the wallets in the default json to 10?

[algobarb]

Saw an extra comma but it's non-blocking.

[codecov]

Codecov Report

Merging #5178 (84c5551) into master (c5936d2) will decrease coverage by 1.50%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #5178      +/-   ##
==========================================
- Coverage   53.60%   52.11%   -1.50%     
==========================================
  Files         439      439              
  Lines       54944    54944              
==========================================
- Hits        29454    28634     -820     
- Misses      23205    23956     +751     
- Partials     2285     2354      +69     

Impacted Files	Coverage Δ
agreement/agreementtest/keyManager.go	0.00% <0.00%> (-100.00%)	⬇️
agreement/agreementtest/simulate.go	0.00% <0.00%> (-85.53%)	⬇️
data/transactions/teal.go	0.00% <0.00%> (-84.00%)	⬇️
data/committee/sortition/sortition.go	23.52% <0.00%> (-58.83%)	⬇️
tools/network/resolveController.go	22.72% <0.00%> (-50.00%)	⬇️
network/netprio.go	41.30% <0.00%> (-28.27%)	⬇️
util/metrics/counter.go	64.51% <0.00%> (-25.81%)	⬇️
agreement/agreeInstall.go	75.00% <0.00%> (-25.00%)	⬇️
crypto/merkletrie/bitset.go	75.00% <0.00%> (-25.00%)	⬇️
data/transactions/logic/doc.go	42.30% <0.00%> (-19.24%)	⬇️
... and 59 more

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