Add iputils-ping to the build scripts

iputils-ping is a required tool for yocto-2.3.

Change-Id: I51834fbc542f88c5f1e673428edb9a56a4f58862
Signed-off-by: Saqib Khan <khansa@us.ibm.com>
diff --git a/openpower-build-setup.sh b/openpower-build-setup.sh
index 04c8cd6..7920df6 100755
--- a/openpower-build-setup.sh
+++ b/openpower-build-setup.sh
@@ -81,7 +81,8 @@
 	wget \
 	which \
 	zlib-devel \
-	zlib-static
+	zlib-static \
+	iputils-ping
 
 RUN grep -q ${GROUPS} /etc/group || groupadd -g ${GROUPS} ${USER}
 RUN grep -q ${UID} /etc/passwd || useradd -d ${HOME} -m -u ${UID} -g ${GROUPS} ${USER}
@@ -123,7 +124,8 @@
 	vim-common \
 	wget\
 	xsltproc \
-        libssl-dev
+        libssl-dev \
+	iputils-ping
 
 RUN grep -q ${GROUPS} /etc/group || groupadd -g ${GROUPS} ${USER}
 RUN grep -q ${UID} /etc/passwd || useradd -d ${HOME} -m -u ${UID} -g ${GROUPS} ${USER}