Changelog:
1a536f2 nautilus: pin ganesha version to 2.8
610f0f6 daemon/common_functions.sh: remove NBSP
44d4737 Dockerfile: update maintainer name
e7b5a2c zap_device: zap dmcrypt partitions as well
a8c0329 Only check RGW_FRONTEND if rgw is used
0fbae6b demo: Set beast as default rgw frontend type
db80ead travis: Remove civetweb references for demo
7942449 demo: replace ceph-rest-api by restful mgr module
e330006 validate_demo_cluster: update osd check regex
abb0a8f travis: Add basic CI on stable-4.0