[feature-add] Added role to rename engine

[tasdikrahman]

Closes issue #8

cc: @pkubica @lukas-bednar @StLuke

[StLuke]

Also this one will require tests as well

[StLuke]

might be good to check -> https://travis-ci.org/rhevm-qe-automation/ovirt-ansible/jobs/242329937

[tasdikrahman]

@lukas-bednar Resolved the hostname bug issue which stopped the playbook run in between, just had to use hostname to set the new hostname and as we had discussed this part will be commented out as people mostly pull out the hostname from their DNS

Wanted to discuss

• two places where I have skipped ansible_lint here in these lines https://github.com/prodicus/ovirt-ansible/blob/issue8/roles/ovirt-engine-rename/tasks/main.yml#L46-L54
• decide a place for putting the optional parameter --otopi-environment here in the engine-rename command at https://github.com/prodicus/ovirt-ansible/blob/issue8/roles/ovirt-engine-rename/tasks/main.yml#L38-L42

I have increased the log verbosity in the CI builds for my understanding, will remove them afterward

[StLuke]

@tasdikrahman any update on the comments?

[tasdikrahman]

@StLuke Addressed the changes you requested, apart from the hostname module which you are suggesting. It is giving the same DBUS error when tried.

[lukas-bednar]

Thank you!