Add a noaudio option for blender rendering

autoinstall_blendnavipy.sh

@@ -5,7 +5,7 @@
 
 # Check the necessary dependencies for the
 # blender build
-blendnavipy --background --python-script=$PWD/navipy/scripts/check_blender_versions.py
+blendnavipy --background --noaudio --python-script=$PWD/navipy/scripts/check_blender_versions.py
 
 # Make packages in the virtualenv match the one used by blender
 pip install --upgrade  pip

navipy/scripts/blendnavipy.py

@@ -83,6 +83,12 @@ def parser_blendnavipy():
                         default=0,
                         help=arghelp)
 
+    arghelp = 'To run the script without audio'
+    parser.add_argument('--noaudio',
+                        action='count',
+                        default=0,
+                        help=arghelp)
+
     arghelp = 'To ignore the autocheck of python version'
     arghelp += 'and blender'
     parser.add_argument('--ignorepycheck',
@@ -176,6 +182,8 @@ def main():
         command = '{} {} '
         if args.background:
             command += '--background '
+        if args.noaudio:
+            command += '-noaudio '
         command += '--python {}'
         command = command.format(
             args.blender_command,