[FIX] Gustaf: limited size of vcf indel sequence output

git-svn-id: http://svn.seqan.de/seqan/trunk@14738 e6417c60-b987-48fd-844e-b20f0fcc1017
[INTERNAL] Gustaf: adjusted parser options

git-svn-id: http://svn.seqan.de/seqan/trunk@14739 e6417c60-b987-48fd-844e-b20f0fcc1017