Remove mongodb when appropriate

src/freedombone-app-smilodon

     function_check drop_database_mongodb
     drop_database_mongodb smilodon
 
+    function_check remove_mongodb
+    remove_mongodb smilodon
+
     remove_completion_param install_smilodon
     sed -i '/smilodon_/d' $COMPLETION_FILE
 }
     useradd -c "Smilodon system account" -d $SMILODON_PATH -m -r -g smilodon smilodon
 
     function_check install_mongodb
-    install_mongodb
+    install_mongodb smilodon
 
     smilodon_create_database
 

src/freedombone-utils-mongodb

 
 # Set this when calling backup and restore commands
 USE_MONGODB=
+MONGODB_APPS_FILE=/root/.mongodbapps
 
 function store_original_mongodb_password {
     if [ ! -f /root/.mongodboriginal ]; then
 }
 
 function install_mongodb {
+    app_name=$1
+
     if [[ "$(uname -a)" == *"armv7"* ]]; then
         echo $'mongodb package is not available for arm 7 architecture'
         exit 7356272
         exit 78352
     fi
 
+    if [ $app_name ]; then
+        if ! grep -q "$app_name" $MONGODB_APPS_FILE; then
+           echo "$app_name" >> $MONGODB_APPS_FILE
+        fi
+    fi
+
     mark_completed $FUNCNAME
 }
 
+function remove_mongodb {
+    app_name=$1
+
+    if [ ! $app_name ]; then
+        return
+    fi
+
+    removemongo=
+    if [ -f $MONGODB_APPS_FILE ]; then
+        sed -i "/$app_name/d" $MONGODB_APPS_FILE
+        mongoapps=$(cat $MONGODB_APPS_FILE)
+        if [ ${#mongoapps} -lt 3 ]; then
+            removemongo=1
+        fi
+    else
+        removemongo=1
+    fi
+
+    if [ $removemongo ]; then
+        apt-get -yq remove mongodb mongo-tools
+        if [ -d /var/lib/mongodb ]; then
+            rm -rf /var/lib/mongodb
+        fi
+    fi
+}
+
 function add_mongodb_user {
     mongodb_username=$1
     mongodb_password=$2