Fix incorrect error handling in bitseq constructor
Fix incorrect error handling in bitseq constructor

- We must ignore key not found error when querying
  datastore for initial state.
- Regression introduced by e2a63dff5a38a0f26f7f0c36356f3a6a28f4efeb

Signed-off-by: Alessandro Boch <5bd2eb5b6f60921d9a2b9cb6a0a86bb947f3d361@docker.com>

argvader/libnetwork,WeiZhang555/libnetwork,vdemeester/libnetwork,wulonghui/libnetwork,bprashanth/libnetwork,kunalkushwaha/libnetwork,wulonghui/libnetwork,bprashanth/libnetwork,curtiszimmerman/libnetwork,pyakpyak/libnetwork,sanimej/libnetwork,vdemeester/libnetwork,kvasdopil/libnetwork,allencloud/libnetwork,msabansal/libnetwork,jmzwcn/libnetwork,argvader/libnetwork,jvinod/libnetwork,cpuguy83/libnetwork,kunalkushwaha/libnetwork,AdoHe/libnetwork,carlye566/libnetwork_eric,tangkun75/libnetwork,jmzwcn/libnetwork,thockin/libnetwork,medallia/libnetwork,mountkin/libnetwork,axsh/libnetwork,frntn/libnetwork,anortef/libnetwork,hackersdotmu/libnetwork,dcbw/libnetwork,sharmasushant/libnetwork,anarcher/libnetwork,tgraf/libnetwork,kolyshkin/libnetwork,minhoryang/libnetwork,frntn/libnetwork,kvasdopil/libnetwork,clnperez/libnetwork,tangkun75/libnetwork,hw-qiaolei/libnetwork,AdoHe/libnetwork,docker/libnetwork,msagheer/libnetwork,mbanikazemi/libnetwork,mahak/libnetwork,aboch/libnetwork_new,anshulr/libnetwork,mountkin/libnetwork,mapuri/libnetwork,hackersdotmu/libnetwork,mYmNeo/libnetwork,YujiOshima/libnetwork,YujiOshima/libnetwork,hw-qiaolei/libnetwork,vdemeester/libnetwork,brahmaroutu/libnetwork,abhi/libnetwork,abhi/libnetwork,minhoryang/libnetwork,amitkris/libnetwork,kolyshkin/libnetwork,runcom/libnetwork,amitkris/libnetwork,mavenugo/libnetwork,tgraf/libnetwork,ityangchen/libnetwork,sharmasushant/libnetwork,sainath14/libnetwork,mYmNeo/libnetwork,vijayendrabvs/libnetwork,anarcher/libnetwork,jimmycmh/libnetwork,medallia/libnetwork,tmakita/libnetwork,junxu/libnetwork,cloudflare/libnetwork,abronan/libnetwork,runcom/libnetwork,mapuri/libnetwork,allencloud/libnetwork,jvinod/libnetwork,wcwxyz/libnetwork,docker/libnetwork,tmakita/libnetwork,cpuguy83/libnetwork,fcrisciani/libnetwork,djones-skytap/libnetwork,djones-skytap/libnetwork,kolyshkin/libnetwork,pyakpyak/libnetwork,thockin/libnetwork,medallia/libnetwork,curtiszimmerman/libnetwork,rogaha/libnetwork,axsh/libnetwork,mavenugo/libnetwork,aboch/libnetwork_new,wcwxyz/libnetwork,carlye566/libnetwork,anshulr/libnetwork,jimmycmh/libnetwork,coolljt0725/libnetwork,mbanikazemi/libnetwork,carlye566/libnetwork,sanimej/libnetwork,abronan/libnetwork,anortef/libnetwork,sainath14/libnetwork,carlye566/libnetwork_eric,msabansal/libnetwork,docker/libnetwork,lindenlab/libnetwork,vijayendrabvs/libnetwork,mahak/libnetwork,brahmaroutu/libnetwork,abhi/libnetwork,cloudflare/libnetwork,fcrisciani/libnetwork,lindenlab/libnetwork,msagheer/libnetwork,mahak/libnetwork,clnperez/libnetwork,ityangchen/libnetwork,dcbw/libnetwork,coolljt0725/libnetwork,rogaha/libnetwork,junxu/libnetwork,WeiZhang555/libnetwork