Allows to override jPowerShell configuration using a map of key/value
Default values are taken from file jpowershell.properties, which can
be replaced just setting it on project classpath
The values that can be overridden are:
waitPause: the pause in ms between each loop pooling for a response.
True if the command could not be correctly executed (timeout or unexpected error)
If you want to check if the command itself finished in error, use the method isLastCommandInError()
instead