build

Fix empty controller list on upgrade. Fixes #2692 #4849

Job	Run time
Build Linux binaries	3m 50s
Build Linux binaries	3m 50s
Build Mac OS binaries	2m 40s
Build Mac OS binaries	2m 40s
Build Windows binaries	7m 30s
Build Windows binaries	7m 30s
Fablab HA Smoketest	13m 28s
Fablab HA Smoketest	12m 47s
Fablab Smoketest	17m 10s
Fablab Smoketest	17m 10s
Run Unit and Integration Tests	8m 59s
Run Unit and Integration Tests	8m 59s
Teardown HA SmokeTest	2m 3s
Teardown HA SmokeTest	2m 16s
Teardown SmokeTest	1m 56s
Teardown SmokeTest	1m 56s
Publish Binaries	43s
Publish Binaries	46s
Publish Release Candidate Linux Packages	0s
Publish Release Candidate Linux Packages	0s
Publish Release Candidate Docker Images	0s
Publish Release Candidate Docker Images	0s
	1h 56m 13s

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