Minor fixing, documentation update

Changes:

• Fixing VO names
• Documentation update
• New workflows

Major release 1.1.0

Major improvements in comparison with 1.0:

• Parallel multithreading all-sites operation
• Integration with oidc-agent
• Upgrade to new versions of used libraries for better stability
• Improvements of error checking and reporting
• Sanitizing and validating data from Internet before using (site configurations from GitHub)
• Clean old codes an deprecated functions
• And many minor improvements in documentations

1.0.3

• Add oidc-agent integration
• Add flexible site config via config/sites.yaml
• Clean old libs and codes
• Change setup.cfg to Python 3 only
• Update documentations

1.0.2

Add option --ignore-missing-vo to suppress printing error message "VO…… not found" in all-sites operation
Update documentation

1.0.1

Adding parallel multithreading execution of Openstack all-sites command

First public release

1.0.0

Fix broken link in README.md

Release candidate

0.9.0

Release candidate