build: Fix detection of OpenSSL on OS X with HomeBrew

Change-Id: Ibcbc9516cf3b47eaab446bd51eb70917226c8104
Refs: #3697

.jenkins.d/00-deps.sh

@@ -13,7 +13,6 @@ if has OSX $NODE_LABELS; then
     brew update
     brew upgrade
     brew install boost pkg-config cryptopp openssl $EXTRA_FLAGS
-    brew link --force openssl
     brew cleanup
 fi
 

.waf-tools/openssl.py

@@ -23,7 +23,7 @@ from waflib import Utils, Logs
 from waflib.Configure import conf
 
 OPENSSL_VERSION_FILE = 'opensslv.h'
-OPENSSL_DIR_OSX = ['/usr/local', '/opt/local']
+OPENSSL_DIR_OSX = ['/usr/local', '/opt/local', '/usr/local/opt/openssl']
 OPENSSL_DIR = ['/usr', '/usr/local', '/opt/local', '/sw']
 
 def options(opt):