[4243] Distcheck failure correction

    Distcheck sporadically fails to clean up test_leases.csv.2
    can be left behind by dhcp4 and dhcp6 testing.

src/bin/dhcp4/tests/Makefile.am
src/bin/dhcp6/tests/Makefile.am
    - Added test_leases.csv.* to CLEANFILES

src/bin/dhcp4/tests/Makefile.am

@@ -26,6 +26,7 @@ AM_CPPFLAGS += -DINSTALL_PROG=\"$(abs_top_srcdir)/install-sh\"
 
 CLEANFILES = $(builddir)/interfaces.txt $(builddir)/logger_lockfile
 CLEANFILES += $(builddir)/load_marker.txt $(builddir)/unload_marker.txt
+CLEANFILES += $(builddir)/test_leases.csv.*
 CLEANFILES += *.json *.log
 
 DISTCLEANFILES = dhcp4_process_tests.sh

src/bin/dhcp6/tests/Makefile.am

@@ -27,6 +27,7 @@ AM_CPPFLAGS += -DINSTALL_PROG=\"$(abs_top_srcdir)/install-sh\"
 
 CLEANFILES  = $(builddir)/logger_lockfile
 CLEANFILES += $(builddir)/load_marker.txt $(builddir)/unload_marker.txt
+CLEANFILES += $(builddir)/test_leases.csv.*
 CLEANFILES += *.json *.log
 
 DISTCLEANFILES = dhcp6_process_tests.sh