main/busybox: increase udhcpc's default discover retries

ref #3105

(cherry picked from commit 40f54f7f)

Conflicts:
	main/busybox/APKBUILD

main/busybox/APKBUILD

 # Maintainer: Natanael Copa <ncopa@alpinelinux.org>
 pkgname=busybox
 pkgver=1.21.1
-pkgrel=1
+pkgrel=2
 pkgdesc="Size optimized toolbox of many common UNIX utilities"
 url=http://busybox.net
 arch="all"
@@ -20,6 +20,7 @@ source="http://busybox.net/downloads/$pkgname-$pkgver.tar.bz2
 	loginutils-sha512.patch
 	busybox-musl-fixes.patch
 	addgroup.patch
+	udhcpc-discover-retries.patch
 
 	0001-ifupdown-pass-interface-device-name-for-ipv6-route-c.patch
 	0001-ifupdown-use-x-hostname-NAME-with-udhcpc.patch
@@ -110,6 +111,7 @@ c5a8dbc8696db6da9c4624b0e11d8fba  bb-app-location.patch
 8c42c9ef0f0419c314c86bcaf7796106  loginutils-sha512.patch
 f718d6d53b6cd1e012edcee32686a846  busybox-musl-fixes.patch
 cdd7e88338f6858d7715a4328afcfc50  addgroup.patch
+91a7584a562a72ba886936558e576bbd  udhcpc-discover-retries.patch
 04eeda8c49d4688e6dec02451f8b6aae  0001-ifupdown-pass-interface-device-name-for-ipv6-route-c.patch
 e1c183cbe1ca18a0fa0d9597314076c9  0001-ifupdown-use-x-hostname-NAME-with-udhcpc.patch
 b4e7c47c05c1fdaee0a418731e1d1135  busyboxconfig
@@ -123,6 +125,7 @@ a31ce8bcb8b81b20e80ffa407600a530d085806c6471f4e4249fcb3a491b79ef  busybox-uname-
 57674b20158c0b266ed028b0c65299f9cbcad7d33d19c9fcc403d3967daba493  loginutils-sha512.patch
 06e0804532b1253019061078c3cd0a46cba74cb8a32a2d3f80cec23e04fa0386  busybox-musl-fixes.patch
 feb28cb9f3476fc7d370f9873e4072cffabdef7c80e0dbc4a577ef41d42cd40f  addgroup.patch
+90825a443339f1c8c249d05f7b025ce53e374d305f8e113d98d45146b105494d  udhcpc-discover-retries.patch
 2e9d56335ca39e944b9abd9ecc91d0e47a3fe3434f8b7ec3f526bc8fa0895ada  0001-ifupdown-pass-interface-device-name-for-ipv6-route-c.patch
 53563c6dc4db13004d0b37f7bf1748e861b5a5c4244c1d34f102c23b689420c5  0001-ifupdown-use-x-hostname-NAME-with-udhcpc.patch
 7774d71ddab017c4e436bc575637bd54e3936a7e82574756afced8e1e0077c57  busyboxconfig
@@ -136,6 +139,7 @@ eb7cce973bfd53ce3350713437b9e2751becfb8dfb10b14f27c4f812297c403b90f80dc2906179d4
 69af4800fcf765b4ae029daced7ff171b6b04d810c94a987c7ba848e275a27b77b18b38df1b85f4a12c4a47ed42f62e0768260eb1198e2aff1c3cea898b85c61  loginutils-sha512.patch
 eed527c8cab79347ed786929c36da76028bf9592a4f047706c3ce14bc96787fc7e685441eca14006eab88b0b8d5ed939116daea95110fa0f87f8b94b1f5e9673  busybox-musl-fixes.patch
 6f10ce677b7968a1b814a955c057a0a278b8c6a93621420756c2698f95a4b730657785b9ab51c88c5bc54d28aca1776d38530064bac8c588c791e1e243326e2f  addgroup.patch
+34415fe69f6b8d42756046aa8e6d9e4f64a3b0ceb9f57c4c988e35870fe975f05d0ac76f1f9a712196e9c59e67aa2a54abf398242009134fb3aca342c25a3646  udhcpc-discover-retries.patch
 f2ed7bf994766a20ceecb28bea8c66307b6b66cdd7099408b1f29a529786ce07e55824b21256321708663e00d6fe9428480b0d3e121b67d6ebd8a8a87b1486d1  0001-ifupdown-pass-interface-device-name-for-ipv6-route-c.patch
 b1a1cc2ada657a3d3364c8c96853575d73784e769cd8768c170c27a3e59abd2beace75dff6d5047c4391725e961d93149f9c3f45ed75fb1c582bf18b818282c9  0001-ifupdown-use-x-hostname-NAME-with-udhcpc.patch
 373b23c3a0db5353dc19bc1f758ec1ebaec82a05f99ac1ab839b95c94e6214f1c252b6b39fcd56cd5f0e0b3bd6c32bd9dde72a4afa5be49c49b6bc9190a8776f  busyboxconfig

main/busybox/udhcpc-discover-retries.patch

+Some slower nics needs more attempts to get a lease
+
+--- ./networking/udhcp/dhcpc.c.orig
++++ ./networking/udhcp/dhcpc.c
+@@ -1238,7 +1238,7 @@
+ 	llist_t *list_x = NULL;
+ 	int tryagain_timeout = 20;
+ 	int discover_timeout = 3;
+-	int discover_retries = 3;
++	int discover_retries = 5;
+ 	uint32_t server_addr = server_addr; /* for compiler */
+ 	uint32_t requested_ip = 0;
+ 	uint32_t xid = xid; /* for compiler */