perf: improve performance mongodb and redis

[chrisleekr]

Description

• Added indexes for MongoDB
• Updated configuration to use cache as well to improve performance
• Updated redis.conf to disable AOF for improving performance
• Moved grid/manual orders to MongoDB from Redis since Redis is not persistent anymore
• Updated MongoDB to not acknowledge insert/update/delete

Related Issue

#262

Motivation and Context

Since the bot was showing performance issues in Raspberry Pi, I started to look at how to improve the performance.

By disabling AOF in Redis and write concern in MongoDB(risky but worth), it starts showing lower CPU usage.

How Has This Been Tested?

Screenshots (if appropriate):

[codecov-commenter]

Codecov Report

Merging #288 (9d99675) into master (7428545) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master      #288   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           75        75           
  Lines         2591      2539   -52     
  Branches       439       434    -5     
=========================================
- Hits          2591      2539   -52     

Impacted Files	Coverage Δ
...b/trailingTrade/step/place-sell-stop-loss-order.js	100.00% <ø> (ø)
app/cronjob/trailingTrade/steps.js	100.00% <ø> (ø)
app/cronjob/trailingTrade.js	100.00% <100.00%> (ø)
app/cronjob/trailingTrade/step/cancel-order.js	100.00% <100.00%> (ø)
app/cronjob/trailingTrade/step/determine-action.js	100.00% <100.00%> (ø)
...lingTrade/step/ensure-grid-trade-order-executed.js	100.00% <100.00%> (ø)
.../cronjob/trailingTrade/step/ensure-manual-order.js	100.00% <100.00%> (ø)
app/cronjob/trailingTrade/step/get-open-orders.js	100.00% <100.00%> (ø)
app/cronjob/trailingTrade/step/place-buy-order.js	100.00% <100.00%> (ø)
...p/cronjob/trailingTrade/step/place-manual-trade.js	100.00% <100.00%> (ø)
... and 10 more

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[habibalkhabbaz]

Thanks @chrisleekr for this nice improvements 🏆
I tested this pull request and I only found one issue.