Spaceman1984 97f21c1835
xenserver: Fixed null pointer and deployment issue on Xenserver with L2 Guest network with configDrive (#4004)
This PR fixes an issue where an instance fails to deploy due to a null pointer when using an L2 Guest Network with DefaultL2NetworkOfferingConfigDrive on Xenserver. It also fixes migrating an instance to another host.

This has been tested by:
- Creating an L2 Guest network, using DefaultL2NetworkOfferingConfigDrive as the network offering.
- Deploying an instance using the L2 Guest network created.
- Migrating the instance away from the host and back
2020-06-23 12:21:50 +05:30
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