Revert "core: Removing leftover of rootPassword"

This reverts commit 8147c9cbf282d0d00bc671b81083b6827f5d1add

Patch breaks UT

Change-Id: I2d91042247a0e2b6661ed4329f22c729acc9ff79
Signed-off-by: Eli Mesika <emesika@redhat.com>