Enhancements for op-build ci.

This patch adds support for running ci for individual platforms,
as well as it can generate firmware images for all the platforms.

Added command line options -p and -a.
-p List of comma separated platform names to build images for those particular platforms.
-a Build firmware images for all the platform defconfig's.

For running ci to individual platforms:
DOCKER_PREFIX=sudo  ./ci/build.sh -p palmetto
DOCKER_PREFIX=sudo  ./ci/build.sh -p garrison,palmetto

For running ci to all the platforms:
DOCKER_PREFIX=sudo  ./ci/build.sh -a
DOCKER_PREFIX=sudo  ./ci/build.sh

And also it contains missing packages required for fedora23 Dockerfile.

Signed-off-by: Pridhiviraj Paidipeddi <ppaidipe@linux.vnet.ibm.com>
diff --git a/ci/build.sh b/ci/build.sh
index d7e98ca..64b862d 100755
--- a/ci/build.sh
+++ b/ci/build.sh
@@ -1,5 +1,36 @@
 #!/bin/bash
 
+while getopts ":ahp:" opt; do
+  case $opt in
+    a)
+      echo "Build firmware images for all the platforms"
+      PLATFORMS=""
+      ;;
+    p)
+      echo "Build firmware images for the platforms: $OPTARG"
+      PLATFORMS=$OPTARG
+      ;;
+    h)
+      echo "Usage: ./ci/build.sh [options] [--]"
+      echo "-h          Print this help and exit successfully."
+      echo "-a          Build firmware images for all the platform defconfig's."
+      echo "-p          List of comma separated platform names to build images for particular platforms."
+      echo "Example:DOCKER_PREFIX=sudo ./ci/build.sh -a"
+      echo -e "\tDOCKER_PREFIX=sudo ./ci/build.sh -p firestone"
+      echo -e "\tDOCKER_PREFIX=sudo ./ci/build.sh -p garrison,palmetto,openpower_p9_mambo"
+      exit 1
+      ;;
+    \?)
+      echo "Invalid option: -$OPTARG"
+      exit 1
+      ;;
+    :)
+      echo "Option -$OPTARG requires an argument."
+      exit 1
+      ;;
+  esac
+done
+
 set -ex
 set -eo pipefail
 
@@ -45,7 +76,7 @@
 )
 	$DOCKER_PREFIX docker build -t openpower/op-build-$distro - <<< "${Dockerfile}"
 	mkdir -p output-images/$distro
-	run_docker openpower/op-build-$distro "./ci/build-all-defconfigs.sh output-images/$distro"
+	run_docker openpower/op-build-$distro "./ci/build-all-defconfigs.sh output-images/$distro $PLATFORMS"
 	if [ $? = 0 ]; then
 		mv *-images output-$distro/
 	else