Add parameter Network Fixed IP to instance creation

[fdmsantos]

To permit define Fixed Ip on instance creation.

$options = [
    'name'    => 'test',
    'imageId' => 'xxxxxxx',
    'flavorId' => 'xxxxxxxxxxxx',
    'blockDeviceMapping' => [[
        "bootIndex"       => 0,
        "uuid"            => 'xxxxxxxxxxxxxx',
        "sourceType"      => "image",
        "volumeSize"      => 20,
        "destinationType" => "volume",
        'deleteOnTermination' => true
    ]],
    'networks' => [
        [
            'uuid' => 'xxxxxxxxxxxxx',
            'fixedIp' => '10.0.0.254'
        ]
    ]
];

$openstack->computeV2()->createServer($options);

[coveralls]

Pull Request Test Coverage Report for Build 631

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage decreased (-0.06%) to 96.08%

---

Files with Coverage Reduction	New Missed Lines	%
src/Common/JsonSchema/JsonPatch.php	1	100.0%

Totals
Change from base Build 624:	-0.06%
Covered Lines:	1691
Relevant Lines:	1760

---

💛 - Coveralls

[pioziol123]

Why did coverage fail? This change is very useful to me.