feat(docker) : use of r2gg python package instead of r2gg docker image

• use new r2gg package https://pypi.org/project/r2gg/ to get r2gg command line tools
• remove use of r2gg docker image in dockerfile.

changed milestone to %0.1.0

added Enhancement label

requested review from @benoitblanc

assigned to @jmkerloch

SonarQube analysis indicates that quality gate is passed.

• Reliability Rating on New Code is passed: Actual value 1
• Security Rating on New Code is passed: Actual value 1
• Maintainability Rating on New Code is passed: Actual value 1
• Coverage on New Code is passed: Actual value 82.71604938271605
• Duplicated Lines (%) on New Code is passed: Actual value 0.0

SonarQube analysis reported no issues.

approved this merge request

merged

mentioned in commit 8bbf405e