Include ceph-init-detect(8) man page

Fixes FTBFS. Submitted upstream at ceph#7933

debian/ceph-detect-init.rst

@@ -0,0 +1,54 @@
+:orphan:
+
+============================================================
+ ceph-detect-init -- display the init system Ceph should use
+============================================================
+
+.. program:: ceph-detect-init
+
+Synopsis
+========
+
+| **ceph-detect-init** [--verbose] [--use-rhceph] [--default *init*]
+
+Description
+===========
+
+:program:`ceph-detect-init` is a utility that prints the init system
+Ceph uses. It can be one of ``sysvinit``, ``upstart`` or ``systemd``.
+The init system Ceph uses may not be the default init system of the
+host operating system. For instance on Debian Jessie, Ceph may use
+``sysvinit`` although ``systemd`` is the default.
+
+If the init system of the host operating system is unknown, return on
+error, unless :option:`--default` is specified.
+
+Options
+=======
+
+.. option:: --use-rhceph
+
+   When an operating system identifies itself as Red Hat, it is
+   treated as if it was CentOS. With :option:`--use-rhceph` it is
+   treated as RHEL instead.
+
+.. option:: --default INIT
+
+   If the init system of the host operating system is unkown, return
+   the value of *INIT* instead of failing with an error.
+
+.. option:: --verbose
+
+   Display additional information for debugging.
+
+Availability
+============
+
+:program:`ceph-detect-init` is part of Ceph, a massively scalable, open-source, distributed storage system. Please refer to
+the Ceph documentation at http://ceph.com/docs for more information.
+
+See also
+========
+
+:doc:`ceph-disk <ceph-disk>`\(8),
+:doc:`ceph-deploy <ceph-deploy>`\(8)

debian/rules

@@ -42,6 +42,8 @@ configure-stamp:
 	# Rewrite .git_version file with the correct patch information.
 	echo $(COMMIT) > src/.git_version
 	echo v$(DEB_VERSION) >> src/.git_version
+	# https://github.com/ceph/ceph/pull/7933
+	cp debian/ceph-detect-init.rst doc/man/8/
 	./autogen.sh
 	./configure --prefix=/usr --localstatedir=/var \
 	  --sysconfdir=/etc  --libexecdir=/usr/lib $(extraopts) $(confflags) \