include remaining log functions from so-functions

salt/common/tools/sbin/so-analyst-install

@@ -23,6 +23,21 @@ fi
 INSTALL_LOG=/root/so-analyst-install.log
 exec &> >(tee -a "$INSTALL_LOG")
 
+log() {
+	msg=$1
+	level=${2:-I}
+	now=$(TZ=GMT date +"%Y-%m-%dT%H:%M:%SZ")
+	echo -e "$now | $level | $msg" >> "$INSTALL_LOG" 2>&1
+}
+
+error() {
+	log "$1" "E"
+}
+
+info() {
+	log "$1" "I"
+}
+
 title() {
 	echo -e "\n-----------------------------\n $1\n-----------------------------\n" >> "$INSTALL_LOG" 2>&1
 }