UTILS: Changed tools for NRPE commands to use local definition
UTILS: Changed tools for NRPE commands to use local definition

- Do not source perun-engine identity, allow local
  definition of API url and user.
- Also properly export perl5libs.

zwejra/perun,zwejra/perun,zlamalp/perun,balcirakpeter/perun,martin-kuba/perun,zlamalp/perun,zoraseb/perun,martin-kuba/perun,mvocu/perun,martin-kuba/perun,zwejra/perun,mvocu/perun,CESNET/perun,zoraseb/perun,balcirakpeter/perun,mvocu/perun,zlamalp/perun,martin-kuba/perun,zlamalp/perun,martin-kuba/perun,balcirakpeter/perun,CESNET/perun,martin-kuba/perun,CESNET/perun,CESNET/perun,balcirakpeter/perun,CESNET/perun,balcirakpeter/perun,mvocu/perun,zwejra/perun,zwejra/perun,CESNET/perun,zwejra/perun,mvocu/perun,mvocu/perun,balcirakpeter/perun,zlamalp/perun,martin-kuba/perun,CESNET/perun,zoraseb/perun,balcirakpeter/perun,zlamalp/perun,mvocu/perun,zoraseb/perun,zoraseb/perun,zoraseb/perun,zlamalp/perun