Fix openjsse CI (#6127)
Fix openjsse CI (#6127)

Revert to docket image with Java 8 available.
ze-pequeno/okhttp,ze-pequeno/okhttp,yschimke/okhttp,yschimke/okhttp,ansman/okhttp,cketti/okhttp,ze-pequeno/okhttp,cketti/okhttp,tiarebalbi/okhttp,cmzy/okhttp,cketti/okhttp,ansman/okhttp,square/okhttp,square/okhttp,ansman/okhttp,square/okhttp,yschimke/okhttp,cmzy/okhttp,tiarebalbi/okhttp,tiarebalbi/okhttp