Move help usage information to beginning of script

If user requests the usage information (e.g. with `--help` argument),
the information should be displayed right away. Currently the script
first runs updates and installs of dependencies, which can take very
long time.

Change-Id: If5a75a98876ddeeb580764d823a11331ee8e9faf
Signed-off-by: Martin Kulhavy <martin.kulhavy@nokia.com>

diff --git a/ci/03-maasdeploy.sh b/ci/03-maasdeploy.sh
index db60bbf..fb599e6 100755 (executable)
--- a/ci/03-maasdeploy.sh
+++ b/ci/03-maasdeploy.sh
@@ -4,6 +4,24 @@ set -ex
 
 source tools.sh
 
+
+usage() {
+  # no xtrace output
+  { set +x; } 2> /dev/null
+
+  echo "OPNFV JOID deployer of the MAAS (Metal as a Service) infrastructure."
+  echo "Usage: $0 custom <path_to_labconfig>"
+  echo "       $0 virtual"
+  exit ${1-0}
+}
+
+# Print usage help message if requested
+if [ "$1" == "help" ] || [ "$1" == "-h" ] || [ "$1" == "--help" ]
+then
+    usage;
+fi
+
+
 virtinstall=0
 labname=$1
 
@@ -45,22 +63,6 @@ sudo apt-get install bridge-utils openssh-server bzr git virtinst qemu-kvm libvi
 sudo -H pip install --upgrade pip
 
 
-usage() {
-  # no xtrace output
-  { set +x; } 2> /dev/null
-
-  echo "OPNFV JOID deployer of the MAAS (Metal as a Service) infrastructure."
-  echo "Usage: $0 custom <path_to_labconfig>"
-  echo "       $0 virtual"
-  exit ${1-0}
-}
-
-if [ "$1" == "help" ] || [ "$1" == "-h" ] || [ "$1" == "--help" ]
-then
-    usage;
-fi
-
-
 #
 # Config preparation
 #