Flaky tests on agent branch

=== RUN   TestGetCheckerByName

coverage: 45.5% of statements

panic: test timed out after 15m0s

goroutine 21 [running]:

testing.(*M).startAlarm.func1()

	/home/couchbase/jenkins/workspace/cbmultimanager-cv_master/go/src/testing/testing.go:1701 +0xe5

created by time.goFunc

	/home/couchbase/jenkins/workspace/cbmultimanager-cv_master/go/src/time/sleep.go:180 +0x45

goroutine 1 [chan receive]:

testing.(*T).Run(0xc0001d4a80, 0x7bc2d8, 0x14, 0x7d2c38, 0x48f401)

	/home/couchbase/jenkins/workspace/cbmultimanager-cv_master/go/src/testing/testing.go:1240 +0x2da

testing.runTests.func1(0xc000001980)

	/home/couchbase/jenkins/workspace/cbmultimanager-cv_master/go/src/testing/testing.go:1512 +0x78

testing.tRunner(0xc000001980, 0xc0000f7da8)

	/home/couchbase/jenkins/workspace/cbmultimanager-cv_master/go/src/testing/testing.go:1194 +0xef

testing.runTests(0xc00018d788, 0x9fa8a0, 0x2, 0x2, 0xc0723138f6ca3902, 0xd18c63ad94, 0xa064c0, 0x7b99d4)

	/home/couchbase/jenkins/workspace/cbmultimanager-cv_master/go/src/testing/testing.go:1510 +0x2fe

testing.(*M).Run(0xc00002e100, 0x0)

	/home/couchbase/jenkins/workspace/cbmultimanager-cv_master/go/src/testing/testing.go:1418 +0x1eb

main.main()

	_testmain.go:95 +0x1c5

goroutine 34 [sleep]:

time.Sleep(0xf4240)

	/home/couchbase/jenkins/workspace/cbmultimanager-cv_master/go/src/runtime/time.go:193 +0xd2

github.com/couchbaselabs/cbmultimanager/agent/pkg/server.(*Server).WaitUntilListening(...)

	/home/couchbase/jenkins/workspace/cbmultimanager-cv_master/cbmultimanager/agent/pkg/server/server.go:71

github.com/couchbaselabs/cbmultimanager/agent/pkg/health/handlers.TestGetCheckerByName(0xc0001d4a80)

	/home/couchbase/jenkins/workspace/cbmultimanager-cv_master/cbmultimanager/agent/pkg/health/handlers/handlers_test.go:79 +0x1ef

testing.tRunner(0xc0001d4a80, 0x7d2c38)

	/home/couchbase/jenkins/workspace/cbmultimanager-cv_master/go/src/testing/testing.go:1194 +0xef

created by testing.(*T).Run

	/home/couchbase/jenkins/workspace/cbmultimanager-cv_master/go/src/testing/testing.go:1239 +0x2b3

goroutine 36 [chan receive]:

github.com/couchbaselabs/cbmultimanager/agent/pkg/server.(*Server).Start.func2(0x82a098, 0xc00018ffc0, 0xc000180380)

	/home/couchbase/jenkins/workspace/cbmultimanager-cv_master/cbmultimanager/agent/pkg/server/server.go:54 +0x74

created by github.com/couchbaselabs/cbmultimanager/agent/pkg/server.(*Server).Start

	/home/couchbase/jenkins/workspace/cbmultimanager-cv_master/cbmultimanager/agent/pkg/server/server.go:53 +0x15e

FAIL	github.com/couchbaselabs/cbmultimanager/agent/pkg/health/handlers	900.036s