Add more instance types for master and capture nodes

[awick]

Focus - Allow creation of smaller Arkime clusters

• Added another capture instance type: t3.medium
• Added master instance types: t3.small.search, t3.medium.search
• Switch to using a sorted array of dicts to find best capture & master instance types instead of ifs
• Changed storage_per_shard to 50G in calculations

Bonus:

• prev user_config when loaded uses from_dict so we can ignore unneeded keys
• editor auto removes trailing spaces (sorry)

Notes:

• Can not specify just 1 master node, so didn't continue with --lab-mode

License

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