Fix project creation

[Fatme]

PR Checklist

• The PR title follows our guidelines: https://github.com/NativeScript/NativeScript/blob/master/CONTRIBUTING.md#commit-messages.
• There is an issue for the bug/feature this PR is for. To avoid wasting your time, it's best to open a suggestion issue first and wait for approval before working on it.
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• All existing tests are passing: https://github.com/NativeScript/nativescript-cli/blob/master/CONTRIBUTING.md#contribute-to-the-code-base
• Tests for the changes are included.

What is the current behavior?

tns create template-tab-navigation-ng --template https://github.com/NativeScript/template-tab-navigation-ng#master does not work

What is the new behavior?

tns create template-tab-navigation-ng --template https://github.com/NativeScript/template-tab-navigation-ng#master works as expected

[rosen-vladimirov]

Just to note the problem is with npm 5.6.0.
The current workflow is:

1. Create project dir and package.json
2. Install the template as dependency of the project
3. Move the files from the template to the project dir (or its app directory)
4. Call npm install tns-core-modules --save in case the template does not have dependency for tns-core-modules.
5. Read the package.json of the template installed in node_modules
6. Call npm install at the root of the project

However, npm decides to uninstall the template on step 4. Not sure why...
At step 6, when we call npm install the template is again installed in node_modules, so we can read its package.json

[rosen-vladimirov]

run ci