Bug 1139607 - EAP cli script fails always during bundle deployment to domain server

#executeCliScript should be called with an absolute File reference.

Side work:
* convert script File reference to absolute when the execute-script command is executed
* log results of handed-over script's execution
* some code cleanup

(cherry picked from commit b6795f890782266d4ab23b825cf6ba7356b0fba3)
Signed-off-by: Thomas Segismont <tsegismo@redhat.com>