Fix number of jobs building php

[frantsao]

Prerequisites

• Put an X between the brackets on this line if you have done all of the following:
  • Checked that your issue isn't already filled: https://github.com/issues?utf8=✓&q=is%3Aissue+user%3Aidealista
  • Checked that there is not already provided the described functionality

Description

During the installation of PHP, make is invoked with the parameter -j ansible_processor_cores. But the effect is not always desired, i.e. hyperthreading processors where ansible_processor_cores < ansible_processor_vcpus.

Steps to Reproduce

1. Run the role in a node with 1 physical CPU and 4 cores

Expected behavior:
4 make jobs are running in parallel

Actual behavior:
Only 1 make job is running

Reproduces how often:
Depend on hardware architecture.

Versions

All.