Update to ubuntu 18.04.1 LTS

[hemang-ajmera]

Submit a feature request or bug report

• I've read the guidelines for Contributing to Roots Projects
• This is a feature request
• This is a bug report
• [X ] This request isn't a duplicate of an existing issue
• I've read the docs and followed them (if applicable)
• This is not a personal support request that should be posted on the Roots Discourse forums

Replace any X with your information.

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What is the current behavior?

Currently the trellis is configured for Ubuntu 16.04

What is the expected or desired behavior?

To use latest ubuntu LTS version

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Bug report

(delete this section if not applicable)

Please provide steps to reproduce, including full log output:

X

Please describe your local environment:

Ansible version: X

OS: X

Vagrant version: X

Where did the bug happen? Development or remote servers?

X

Please provide a repository or your wordpress_sites config (if possible):

X

Is there a related Discourse thread or were any utilized (please link them)?

X

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Feature Request

(delete this section if not applicable)

Please provide use cases for changing the current behavior:

X

Other relevant information:

X

[swalkinshaw]

There's already a PR in progress for this #992