Use tini to reap orphan child process

[SaiedKazemi]

This commit uses tini to start traceroute-caller in order to reap its orphaned child processes.

Also, for local debugging via docker-compose, this commit uses the same parameters as are specified in k8s/daemonsets/templates.jsonnet.

The changes were tested locally via docker-compose, making sure that there are no orphan processes after traceroute-caller runs scamper.

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This change is 

[coveralls]

Pull Request Test Coverage Report for Build 281

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.3%) to 98.82%

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Totals
Change from base Build 271:	0.3%
Covered Lines:	586
Relevant Lines:	593

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💛 - Coveralls