Increase / allow configuration of openstack VM boot timeout

[alexdlukens]

Hello,

A user on PS7 is experiencing test failures related to Openstack VM boot timeouts. I looked at spread and it appears the timeout is a static 2 minutes:

spread/spread/openstack.go

Line 389 in ae28479

var openstackServerBootTimeout = 2 * time.Minute

I think this is an unreasonably low timeout for spawning VMs on an Openstack cloud. We have had instances where VMs take > 5 minutes to enter an active/running state on the Prodstack clouds.

I think the following should be done:

• increasing timeout significantly (8 minutes)
• parameterizing this timeout to allow user configuration

Also, additional logic to check for BUILD versus ERROR state could be added to make the checks more robust. IIUC all VMs that fail to build should eventually transition to error state

(mattermost reference for the user issue here)

Thanks,
Alex Lukens