Allow deploy agent run serverless on existing build #1350
Merged
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Summary
We can reproduce end to end deployment flow with an existing build on the host.
Add a flag to specify the starting deploy stage so we can skip downloading.
I will use it to POC running multiple deploy agents on a host. This can be used for testing telefig configs and deployment scripts as well.
Test plan
Added UT
Ran on devapp and a sample host.
bazel-bin/deployd/deploy-agent -e prod -f /etc/deployagent.conf --use-facter --mode serverless --build "{\"build_branch\": \"master\",\"build_name\": \"beacon\",\"build_commit\": \"bfb061eb8f0031fb26d373b34787ff0b389a6315\"}" --env-name beacon --deploy-stage PRE_RESTART