dev/test dependencies included in the final binary

[kruskall]

APM Server version (apm-server version): 90b9ac5

Description of the problem including expected versus actual behavior:

Dev/Test dependencies are included in the finaly binary. We should investigate why this is happening and possible solution

Steps to reproduce:

Please include a minimal but complete recreation of the problem,
including server configuration, agent(s) used, etc. The easier you make it
for us to reproduce it, the more likely that somebody will take the time to
look at it.

1. make apm-server
2. strings apm-server | grep testify is not empty

Provide logs (if relevant):

$ strings apm-server | grep testify 
dep     github.com/stretchr/testify     v1.8.4  h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
github.com/stretchr/testify/assert.init
github.com/stretchr/[email protected]/assert/assertion_compare.go
dep     github.com/stretchr/testify     v1.8.4  h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=

[axw]

goda graph -std .:all says it is libbeat/idxmgmt/lifecycle -- elastic/beats#37939