Long startup time for OpenM++ OMS

[vexingly]

The start_oms script has a lot of logic that causes it to take a long time to startup, this is not a good user experience.

If possible use the following methods to reduce this startup time:

1. include tasks in the base image when possible
2. include tasks in the environment startup / first run script (executes only once)
3. use logic to skip steps that do not need to be run multiple times
4. use a separate script and execute it in a separate process so that it runs in parallel with the oms startup