Add `--any` option to `ssh` command

[DavidWittman]

Sometimes I just want to connect to any server matching a particular Name tag. The --any flag supports this behavior by selecting the first running instance in the list of instances and connecting to it.

[coveralls]

Pull Request Test Coverage Report for Build 1350

• 1 of 5 (20.0%) changed or added relevant lines in 1 file are covered.
• 14 unchanged lines in 2 files lost coverage.
• Overall coverage remained the same at 34.419%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
commands/ssh.go	1	5	20.0%
<!--	Total:	1	5	20.0%	-->

Files with Coverage Reduction	New Missed Lines	%
aws/fetch/s3_helpers.go	2	74.85%
aws/fetch/manual_fetchers.go	12	73.6%
<!--	Total:	14		-->

Totals
Change from base Build 1345:	0.0%
Covered Lines:	13184
Relevant Lines:	38304

---

💛 - Coveralls

[simcap]

Thanks for the PR and the work, but unfortunately this project is (so far) not maintained anymore. So it is unlikely this will ever get merged.