[#90] Ignore debian/ files for clean build

Changes in debian dir produce `-dirty` suffix in version.

Signed-off-by: Alex Vanin <a.vanin@yadro.com>

.gitignore

@@ -18,4 +18,12 @@ coverage.txt
 coverage.html
 
 # debhelpers
-**/.debhelper
+**/*debhelper*
+
+# debian package build files
+debian/files
+debian/changelog
+debian/*.log
+debian/*.substvars
+debian/frostfs-http-gw/
+

Makefile

@@ -153,6 +153,7 @@ clean:
 
 # Package for Debian
 debpackage:
+	cp debian/changelog.init debian/changelog
 	dch --package frostfs-http-gw \
 			--controlmaint \
 			--newversion $(PKG_VERSION) \