oradb-manage-users: added support for update_password
oradb-manage-users: added support for update_password

The password of existing users could be changed with:
        users:
          - schema: dbsnmp
            update_password: always
            state: unlocked

This is needed for existing accounts. By default only new
created accounts will get the password, because the role
will always set the password for the user when update_password
is set to 'always'!

oravirt/ansible-oracle,ilspleno/ansible-oracle,oravirt/ansible-oracle,ilspleno/ansible-oracle