Add Vagrant support for running automated tests

tests/lib/color-output.sh

@@ -1,9 +1,23 @@
 # ansi escapes for hilighting text
 F_DANGER=$(echo -e "\033[31m")
 F_WARN=$(echo -e "\033[93m")
+F_SUCCESS=$(echo -e "\033[32m")
 F_RESET=$(echo -e "\033[39m")
 
 
+success() {
+    local echoarg
+    case "$1" in
+        -n )
+            echoarg="$1"
+            shift
+            ;;
+        * )
+            echoarg=""
+    esac
+    echo $echoarg "${F_SUCCESS}$1${F_RESET}"
+}
+
 danger() {
     local echoarg
     case "$1" in

tests/lib/misc.sh

@@ -67,3 +67,17 @@ sha1() {
 	python3 -c "import hashlib; m=hashlib.sha1(); m.update(bytearray(r'''$txt''','utf-8')); print(m.hexdigest());" || die "Unable to generate sha1 hash"
 }
 
+elapsed_pretty() {
+    local start_s="$1"
+    local end_s="$2"
+    local elapsed elapsed_m elapsed_s
+    if [ -z "$end_s" ]; then
+        elapsed="$start_s"
+    else
+        let elapsed="$end_s - $start_s"
+    fi
+    
+    let elapsed_m="$elapsed / 60"
+    let elapsed_s="$elapsed % 60"
+    echo "${elapsed_m}m ${elapsed_s}s"
+}