Soapui tests call services on a local server

A new project is provided; it defines both mock and tests.
Tests now call the local server which exposes the mock services, thus we
do not rely on external services (the former was very instable) and the
test does not need any network access.

In addition, we now also check that the mock goal is working ;-)
Set as a pom project

So also remove explicit declaration of maven-surefire-plugin
Fix configuration of the test goal output folder
Clean logs generated by the soapui-maven-plugin
Move old soapui project file
Merge branch 'master' into stabilize-soapui-maven-plugin-tester

Conflicts:
	pom.xml
Reactivate the plugin tester module by default

This module was desactivated by the last merge commit from master, so
reactivate it
Merge branch 'stabilize-soapui-maven-plugin-tester' of https://github.com/redfish4ktc/soapui into stabilize-soapui-maven-plugin-tester-SOAP-369
Remove the old soapui project file
The plugin tester module is always runned
Update the plugin tester documentation
Merge branch 'stabilize-soapui-maven-plugin-tester' of https://github.com/redfish4ktc/soapui into stabilize-soapui-maven-plugin-tester-SOAP-369
Minor changes mock response text