(DIO-908) Adding a way to set Logger level via --loglevel

this is specially useful if you also use in combination --json to remove superfluous stdout

lib/vmfloaty/logger.rb

@@ -17,6 +17,19 @@ class FloatyLogger < ::Logger
     FloatyLogger.logger.error msg
   end
 
+  def self.setlevel=(level)
+    level = level.downcase
+    if level == "debug"
+      self.logger.level = ::Logger::DEBUG
+    elsif level == "info"
+      self.logger.level = ::Logger::INFO
+    elsif level == "error"
+      self.logger.level = ::Logger::ERROR
+    else
+      error("set loglevel to debug, info or error")
+    end
+  end
+
   def initialize
     super(STDERR)
     self.level = ::Logger::INFO