Fixes for OSRFSourceCreation and tests related

[j-rivero]

Following up https://github.com/gazebo-tooling/release-tools/pull/989 and https://github.com/gazebo-tooling/release-tools/pull/1008, some fixes and improve of the testing. Each commit is self-contained:

• Fix PACKAGE_NAME replaced by PACKAGE in previous changes e5b2ebc948a3bd557e90fc644315f781bbeb2825
• Change TARBALL_NAME bY S3_FILES_TO_UPLOAD 3602f12acd42de1198037aa55e6419ae68576bdd
• Use PROJECT_NAME_TO_COPY_ARTIFACTS instead of hardcoding test job 05afb08d89185f8deb759af51ea0aea2ce407e8b
• Support EXTRA_OSRF_REPO to be passed to OSRFReleasepy 7122876b484d54c32e84363a5ad4cf153fd518c5
• Handle ~ symbols in git tags https://github.com/gazebo-tooling/release-tools/pull/1024/commits/0543b683376e2d3d0eb5414ef10ab5af0347babe

[j-rivero]

Tested: