Description of problem:
There is a case that the default TIMEOUT value 10[s] is not enough when there are so many geneve tunnels to start up the bonding interface.

In this case, we need to modify TIMEOUT value in ifup-ovs script.
However, ifup-ovs is a script file and it is not configuration file.
So, there is a chance to overwrite the file with the new scripts.

To preserve the modified TIMEOUT parameter, we should put the parameter outside of ifup-ovs scripts and include the configuration outside of the scripts.

Version-Release number of selected component (if applicable):
OSP17.1

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