Option to allocate or not the vCPUs and RAM settings for the GNS3 VM. Fixes https://github.com/GNS3/gns3-gui/issues/3069

gns3server/controller/gns3vm/base_gns3_vm.py

@@ -30,6 +30,7 @@ class BaseGNS3VM:
         self._ip_address = None
         self._port = 80  # value not used, will be overwritten
         self._headless = False
+        self._allocate_vcpus_ram = True
         self._vcpus = 1
         self._ram = 1024
         self._user = ""
@@ -203,6 +204,26 @@ class BaseGNS3VM:
 
         self._headless = value
 
+    @property
+    def allocate_vcpus_ram(self):
+        """
+        Returns whether VCPUs and RAM settings should be configured for the GNS3 VM.
+
+        :returns: boolean
+        """
+
+        return self._allocate_vcpus_ram
+
+    @allocate_vcpus_ram.setter
+    def allocate_vcpus_ram(self, value):
+        """
+        Sets whether VCPUs and RAM settings should be configured for the GNS3 VM.
+
+        :param value: boolean
+        """
+
+        self._allocate_vcpus_ram = value
+
     @property
     def vcpus(self):
         """