lxc: set default lxcpath to /lxc

Signed-off-by: Luka Perkov <luka@openwrt.org>

utils/lxc/Makefile

@@ -155,7 +155,7 @@ define Package/lxc-common/install
 	$(INSTALL_DIR) $(1)/etc/lxc/
 	$(CP) \
 		$(PKG_INSTALL_DIR)/etc/lxc/default.conf \
-		$(1)/etc/lxc/
+		$(1)/etc/lxc/lxc.conf
 endef
 
 define Package/lxc-hooks/install

utils/lxc/patches/100-lxc-defconfig.patch

@@ -0,0 +1,5 @@
+--- a/config/etc/default.conf.unknown
++++ b/config/etc/default.conf.unknown
+@@ -1 +1,2 @@
++lxc.lxcpath = /lxc
+ lxc.network.type = empty