Line simplification for development

[mcollina]

We say that pino-pretty is a development tool, however it's very verbose in its default settings to use for local development. In this PR I simplified it a bit:

1. Use the local timezone and just print the time. If I'm developing code I want to reason on my own timezone and I'm not interested in what day it is.
2. remove the hostname as it's unlikely to change given that's my development machine.

This was inspired by fastify/fastify-cli#536

[coveralls]

Pull Request Test Coverage Report for Build 2831970454

• 0 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 2831615331:	0.0%
Covered Lines:	383
Relevant Lines:	383

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💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 2832449335

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

---

Totals
Change from base Build 2831615331:	0.0%
Covered Lines:	383
Relevant Lines:	383

---

💛 - Coveralls

[jsumners]

Looks good to me.