cluster::mysql calls `mysql` command in create-init-file
However mysql client package is not installed at a moment,
when this command is executed. Thus it fails.
Change-Id: Iaf4dd8f8ffe58e47bef07df04952d889a8c32212
Closes-Bug: #1638904
Signed-off-by: Pavel Glushchak <pglushchak@virtuozzo.com>