1.5.0-alpha.19

Otoroshi version 1.5.0-alpha.19

https://github.com/MAIF/otoroshi/issues?q=is%3Aissue+label%3A1.5.0-alpha.19+is%3Aclosed
v1.5.0-alpha.18...v1.5.0-alpha.19
https://github.com/MAIF/otoroshi/releases/tag/v1.5.0-alpha.19

• dynamic root domains (#879)
• configure input MTLS in the danger zone (#881)
• static response plugin (#882)
• circuit breaker cache too aggressive (#883)
• add tags and meta on targets (#884)