Davanum Srinivas f8aef8b911 Ability to specify OS_* variables for OpenStack configuration ...

When we convert the OpenStack cloud provider to run in an external
process, we should be able to use kubernetes Secrets capability to
inject the OS_* variables. This way we can specify the cloud
configuration as a configmap, specify secrets for the userid/password
information. The configmap can be mounted as a file. the secrets can
be made available as environment variables. the external controller
itself can run as a pod/daemonset.

For backward compat, we preload all the OS_* variables, if anything
is in the config file, then that overrides the environment variables.

2018-01-18 09:52:35 -05:00

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