phonebook csv upload broken

[Stell0]

CSV upload as phonebook source api returns 500

pr:

• https://github.com/nethesis/nethserver-phonebook-mysql/pull/50
• https://github.com/nethesis/ns8-nethvoice/pull/204
• https://github.com/NethServer/nethserver-ns8-migration/pull/69

[Stell0]

in 7.9.2009/autobuild:

• nethserver-ns8-migration-1.0.10-1.7.pr70.g616487d.ns7.x86_64.rpm x86_64

[Stell0]

Verified

[Stell0]

Release 1.0.11