adding HotSwapAgent to DCEVM image

Adding Java tarball SHA256 verification

VERSION: 8/current to 8u151b12, alpine 3.6, glibc 2.6

VERSION: upgrading 8/current to 8u144b01

VERSION: updated 8/current to 8u141b15

README: updated current to 8u131b11

README/CLEANUP: tagging clarification, and cleanup

111b14

DNS: setting networkaddress.cache.ttl to 10 seconds

DNS: setting networkaddress.cache.ttl=30