fixed regexp for searching hook scripts (bnc#813235)

do not match scripts for different steps
Merge pull request #7 from yast/fixed_hooks_bnc813235

Fixed regexp for searching hook scripts (bnc#813235)
Merge remote-tracking branch 'origin/Code-11-SP3' into product_rename_bnc800515

Conflicts:
	package/yast2-wagon.changes