Handle possibility of network_port not having private_ip_address

[djberg96]

Addresses an issue where not every IP configuration has a private_ip_address property. We already guard against this possibility in the cloud manager, but apparently missed it in the network manager.

Addresses #82

[miq-bot]

Checked commit https://github.com/djberg96/manageiq-providers-azure/commit/3d44446ecf4e8fc37fec7715f0266b161a3f93e1 with ruby 2.2.6, rubocop 0.47.1, and haml-lint 0.20.0
1 file checked, 0 offenses detected
Everything looks fine. 🍪

[djberg96]

@miq-bot add_label fine/yes

[djberg96]

@miq-bot add_label euwe/yes

[bzwei]

LGTM

[simaishi]

@djberg96 Is there a BZ for this? Can you please create if it doesn't exist?

[djberg96]

@simaishi https://bugzilla.redhat.com/show_bug.cgi?id=1467403

[simaishi]

Euwe backport (to manageiq repo) details:

$ git log -1
commit 6b79018770d0fa27b3cf4c5d79f4adac6606af07
Author: Bronagh Sorota <bsorota@redhat.com>
Date:   Tue Jun 27 09:38:26 2017 -0400

    Merge pull request #85 from djberg96/private_ip
    
    Handle possibility of network_port not having private_ip_address
    (cherry picked from commit cb44c138c3496d5cc7326dc4df923c10969e170e)
    
    https://bugzilla.redhat.com/show_bug.cgi?id=1468604

[simaishi]

Fine backport details:

$ git log -1
commit 352f7052bddc3c66651ad772e478e8eb0175e811
Author: Bronagh Sorota <bsorota@redhat.com>
Date:   Tue Jun 27 09:38:26 2017 -0400

    Merge pull request #85 from djberg96/private_ip
    
    Handle possibility of network_port not having private_ip_address
    (cherry picked from commit cb44c138c3496d5cc7326dc4df923c10969e170e)
    
    https://bugzilla.redhat.com/show_bug.cgi?id=1468700