This reverts commit 1c85fdc390e05eb578874e77fad9d4ec942da791.
Do not use randomly generated strings in configmaps as this leads to
whole helm release redeployment even no values are changed. The random
items have to be generated outside of helm chart and provided via
values.
Also previous behaviour didn't allow to use cache during rolling upgrade
as new pods were spawned with new key.
Change-Id: I423611b18fca0d65e2e721a9c6a0c3d8df0813d2
90d070390d