LRA quickstarts lra-examples wrongly re-compile coordinator

The LRA quickstarts 'lra-examples' tries to recompile the LRA coordinator.

This is wrong as LRA coordinator should be shipped and used as it is in the version provided by Narayana team.
This recompilation causes the issue when there is a non-existing version of LRA API spec in the repo (e.g. some snapshot from eclipse microprofile).

Resolution:
The coordinator should be taken from maven repository as provided during the Narayana release.