Apply path by Andreas Henriksson to fix usrmerge issue.

Pass PATH_TO_APTGET=/usr/bin/apt-get to configure
- fixes reproducible build on merged-usr vs non-merged systems.
(closes: #914092)

debian/changelog

@@ -1,6 +1,13 @@
 monitoring-plugins (2.2-5) UNRELEASED; urgency=medium
 
+  [ Bas Couwenberg ]
   * Bump Standards-Version to 4.2.1, no changes.
+
+  [ Andreas Henriksson ]
+  * Pass PATH_TO_APTGET=/usr/bin/apt-get to configure
+    - fixes reproducible build on merged-usr vs non-merged systems.
+    (closes: #914092)
+
   * 
 
  -- Jan Wagner <waja@cyconet.org>  Sun, 13 May 2018 19:18:00 +0200

debian/rules

@@ -82,6 +82,7 @@ config.status: configure
 	# Add here commands to configure the package.
 	# Append 'All warnings', 'Immediate binding' and dpkg-buildflags flags
 	CFLAGS="$$(DEB_CFLAGS_MAINT_APPEND='-Wall -Wl,-z,now' dpkg-buildflags --get CFLAGS)" \
+	PATH_TO_APTGET=/usr/bin/apt-get \
 	PGINCLUDE="-I`pg_config --includedir`" PGLIBS="-lpq -lcrypt" \
 	./configure \
 		--disable-maintainer-mode \