[TRAVIS] Increase timeout for health checks
[TRAVIS] Increase timeout for health checks

We originally added a two minute timeout to the health checks to allow
the cluster time to become healthy. Lately, there are a couple of checks
that may need more than two minutes, so we are going to increase it to
five.

phnmnl/mantl,KaGeN101/mantl,CiscoCloud/microservices-infrastructure,CiscoCloud/microservices-infrastructure,KaGeN101/mantl,bitium/mantl,mantl/mantl,CiscoCloud/mantl,datascienceinc/mantl,bitium/mantl,mantl/mantl,CiscoCloud/mantl,datascienceinc/mantl,sehqlr/mantl,phnmnl/mantl,sehqlr/mantl