Set template namespace to VM namespace

[rawagner]

No description provided.

[coveralls]

Pull Request Test Coverage Report for Build 760

• 3 of 3 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.008%) to 87.631%

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Totals
Change from base Build 758:	0.008%
Covered Lines:	1891
Relevant Lines:	2068

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💛 - Coveralls

[mareklibra]

I'm not sure if I understand this change. When is this needed?
No matter the template is from, the VM should be created within actual namespace.

[rawagner]

we are posting template to ProcessedTempates endpoint before VM creation. This endpoint will resolve all template parameters and returns processed template which is then used to create VM.
There is an issue in case of common-templates which are living in openshift namespace. Default user can read those templates but cannot post to that namespace. In order to be able to use ProcessedTemplates endpoint, we need to change template's namespace to the one which is accessible to user - namespace of VM