Remove 404 for list and details actions of servers
Remove 404 for list and details actions of servers

Just found when the marker can't be found, we won't return 404,
instead of we will return 400. This patch removes the 404 code from
list and details doc.

Part of bp:api-ref-in-rst

Change-Id: I03e76a3a45f2d59c8fb01610cbd751d5b91f5964

alaski/nova,vmturbo/nova,gooddata/openstack-nova,Juniper/nova,cloudbase/nova,sebrandon1/nova,vmturbo/nova,sebrandon1/nova,Juniper/nova,klmitch/nova,bigswitch/nova,Juniper/nova,jianghuaw/nova,rajalokan/nova,rajalokan/nova,phenoxim/nova,gooddata/openstack-nova,gooddata/openstack-nova,klmitch/nova,phenoxim/nova,mikalstill/nova,rahulunair/nova,openstack/nova,mahak/nova,klmitch/nova,mahak/nova,hanlind/nova,rajalokan/nova,klmitch/nova,jianghuaw/nova,cloudbase/nova,Juniper/nova,rahulunair/nova,bigswitch/nova,cloudbase/nova,jianghuaw/nova,mahak/nova,openstack/nova,vmturbo/nova,mikalstill/nova,vmturbo/nova,mikalstill/nova,alaski/nova,hanlind/nova,rahulunair/nova,gooddata/openstack-nova,hanlind/nova,jianghuaw/nova,rajalokan/nova,openstack/nova,sebrandon1/nova