Bumping etcd and go etcd to get rid of flakines

[#75988474]

Signed-off-by: Johannes Tuchscherer <jtuchscherer@pivotallabs.com>
Revert "Bumping etcd and go etcd to get rid of flakines"

This reverts commit b6333985d3f2f2d156fc5573a84de9dc772f6753.
automatic promotion by GoCD workflow LoggregatorIntegrationTest/146 > IntegrationTests/1 > IntegrationTests

tests passed against https://github.com/cloudfoundry/cf-release/commit/caa093a8bf46a8532a0cce4d13368902cfeca5ea