perf: trigger rav request concurrently

[gusinacio]

Fixes #380

[coveralls]

Pull Request Test Coverage Report for Build 11391881490

Details

• 139 of 152 (91.45%) changed or added relevant lines in 4 files are covered.
• 3 unchanged lines in 1 file lost coverage.
• Overall coverage increased (+0.3%) to 70.97%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
tap-agent/src/agent/sender_account.rs	78	91	85.71%

Files with Coverage Reduction	New Missed Lines	%
tap-agent/src/agent/sender_account.rs	3	91.78%

Totals
Change from base Build 11386312904:	0.3%
Covered Lines:	4618
Relevant Lines:	6507

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💛 - Coveralls

[carlosvdr]

Code looks overall good with me, id like to have a call about it if possible

[gusinacio]

It's missing a way to block the allocation from triggering another rav, while a rav is being executed.