update for yast2-add-on-creator

This update fixes the following non-security issues with yast2-add-on-creator:

- fix expect script used for signing rpm's
- generate MD5SUM files after signing packages (bnc#485825)
- 3.0.2

Fixed bugs
bnc#485825
yast2-add-on-creator: enable resigning of RPM packages causes checksum error
Selected Binaries
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