가이드데로 수정하였으나, 동일한 현상이 발생합니다.
/etc/resolv.conf
# this file was automatically updated by bosh-dns
nameserver 169.254.0.2
nameserver 8.8.8.8
nameserver 10.0.2.1

근원적인 문제는 paas-ta 내부에서 외부 domain을 해석할 수 없다는 것입니다.

참조사항)
- paas-ta가 설치된 host에서는 8.8.8.8 과 무관한 dns를 사용하며, 8,8,8.8 에는 접근할 수 없습니다.
- 하지만, 설치 host에서는 java-buildpack.cloudfoundry.org에 접근 가능합니다.

cf logs 결과 는 아래와 같습니다. (첨부참조) ..
============================
2019-10-23t02:41:56.74+0000 [stg/0] out downloading app package...
2019-10-23t02:41:56.80+0000 [stg/0] out downloaded app package (4.8k)
2019-10-23t02:42:34.08+0000 [stg/0] err [downloadcache] warn unable to download https://java-buildpack.cloudfoundry.org/jvmkill/trusty/x86_64/index.yml into cache /tmp/cache/final: failed to open tcp connection to java-buildpack.cloudfoundry.org:443 (getaddrinfo: name or service not known)
2019-10-23t02:42:34.08+0000 [stg/0] err [buildpack] error finalize failed with exception #
2019-10-23t02:42:34.08+0000 [stg/0] err jvmkill agent error: unable to find cached file for https://java-buildpack.cloudfoundry.org/jvmkill/trusty/x86_64/index.yml
2019-10-23t02:42:34.09+0000 [stg/0] err failed to compile droplet: failed to run finalize scr.ipt: exit status 1
2019-10-23t02:42:34.11+0000 [stg/0] out exit status 223