LU-10869 build: package configuration files for Ubuntu / Debian

For a long time Lustre never added /etc configuration files to its
debian packages. It could get away with but now you can see it
fail conf-sanity test 76a. This test the lctl set_param -P which
uses udev events to set the tunables for lustre. In order for it
to work a default udev rule has to be added to 99-lustre.rules.
Beside the missing 99-lustre.rules and in all the other files used
for configuration. Lastly create conffile which is the way Debian
handles potential stomping of configuration files. When installing
with apt-get install it will ask the person installing if they
want to over ride specific files.

Test-Parameters: clientdistro=ubuntu1604 trivial testlist=conf-sanity
Test-Parameters: envdefinitions=ONLY=76a testlist=conf-sanity

Lustre-change: https://review.whamcloud.com/31850


Lustre-commit: 8f221cf6

Change-Id: Ic0aaf2bba531ce23a3e23ef070a1501032ad1c9f
Signed-off-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-by: Thomas Stibor <t.stibor@gsi.de>
Reviewed-by: Nathaniel Clark <nathaniel.l.clark@intel.com>
Reviewed-on: https://review.whamcloud.com/32471


Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>

debian/lustre-utils.conffiles

+/etc/lnet.conf
+/etc/lnet_routes.conf
+/etc/modprobe.d/ko2iblnd.conf
+/etc/udev/rules.d/99-lustre.rules

debian/lustre-utils.install

 debian/tmp/sbin/*			sbin
 debian/tmp/usr/sbin/*			usr/sbin
 debian/tmp/usr/bin/*			usr/bin
+debian/tmp/lib/systemd/system/*		lib/systemd/system
+debian/tmp/etc/*			etc

debian/rules

@@ -349,7 +349,7 @@ binary-modules: prep-deb-files
 	$(MAKE) $(PMAKEARGS)
 	$(MAKE) install DESTDIR=$(CURDIR)/debian/$(PKGNAME)
 	# Remove stuff that doesn't belong (no module-only target)
-	cd $(CURDIR)/debian/$(PKGNAME) && rm -rf usr/bin usr/sbin usr/lib usr/share usr/include/lustre sbin etc
+	cd $(CURDIR)/debian/$(PKGNAME) && rm -rf usr/bin usr/sbin usr/lib usr/share usr/include/lustre lib/systemd sbin etc
 	dh_installdocs -p$(PKGNAME)
 	dh_installchangelogs -p$(PKGNAME)
 	dh_installmodules -p $(PKGNAME)