use the log functions for errors and status messages

This causes the error messages to go to standard error, and it makes
it easy to prefix all log messages if desired.

tools/build_test_env.sh

@@ -29,14 +29,14 @@ PY_VER=2
 while getopts :p: opt "$@"; do
     case $opt in
         p) PY_VER=$OPTARG;;
-        *) echo "Unknown option: $opt"; exit 1;;
+        *) fatal "Unknown option: $opt";;
     esac
 done
 
 case $PY_VER in
     2) VENV_CMD=virtualenv;;
     3) VENV_CMD=pyvenv;;
-    *) echo "Wrong python version (2 or 3)"; exit 1;;
+    *) fatal "Wrong python version (2 or 3)";;
 esac
 
 VENV=$(pwd)/.venv
@@ -63,7 +63,7 @@ GREEN='\033[0;32m'
 NC='\033[0m'
 OK="echo -e ${GREEN}OK${NC}"
 
-echo -n "Waiting for gitlab to come online... "
+log "Waiting for gitlab to come online... "
 I=0
 while :; do
     sleep 5
@@ -73,7 +73,6 @@ while :; do
     [ $I -eq 120 ] && exit 1
 done
 sleep 5
-$OK
 
 # Get the token
 TOKEN=$(curl -s http://localhost:8080/api/v3/session \
@@ -92,8 +91,8 @@ url = http://localhost:8080
 private_token = $TOKEN
 EOF
 
-echo "Config file content ($CONFIG):"
-cat $CONFIG
+log "Config file content ($CONFIG):"
+log <$CONFIG
 
 $VENV_CMD $VENV
 . $VENV/bin/activate