core: Fix ConfigValues.VdsRecoveryTimeoutInMintues name

Renames ConfigValues attribute VdsRecoveryTimeoutInMintues
to VdsRecoveryTimeoutInMinutes.

Change-Id: I6e06fbf0b6020e0cb7db645cba7877135d31cc1d
Bug-Url: https://bugzilla.redhat.com/1112036
Signed-off-by: Martin Perina <mperina@redhat.com>