slapformat: no_bridge becomes 'not create_tap'.

create_tap is true by default.
rationale: better understanding of what does the option, and simpler use of
slapgrid.

slapos/format.py

@@ -179,7 +179,7 @@ class Computer(object):
   def __getinitargs__(self):
     return (self.reference, self.interface)
 
-  def getAddress(self, no_bridge=False):
+  def getAddress(self, allow_tap=False):
     """
     Return a list of the interface address not attributed to any partition, (which
     are therefore free for the computer itself).
@@ -201,7 +201,7 @@ class Computer(object):
       if address_dict['addr'] not in computer_partition_address_list:
         return address_dict
 
-    if not no_bridge:
+    if allow_tap:
       # all addresses on interface are for partition, so lets add new one
       computer_tap = Tap('compdummy')
       computer_tap.createWithOwner(User('root'), attach_to_tap=True)
@@ -854,10 +854,6 @@ class Parser(OptionParser):
              help="Don't actually do anything.",
              default=False,
              action="store_true"),
-      Option("-b", "--no_bridge",
-             help="Don't use bridge but use real interface like eth0.",
-             default=False,
-             action="store_true"),
       Option("-v", "--verbose",
              default=False,
              action="store_true",
@@ -982,7 +978,7 @@ def run(config):
   computer.instance_root = config.instance_root
   computer.software_root = config.software_root
   config.logger.info('Updating computer')
-  address = computer.getAddress(config.no_bridge)
+  address = computer.getAddress(config.create_tap)
   computer.address = address['addr']
   computer.netmask = address['netmask']
 
@@ -1009,7 +1005,7 @@ def run(config):
     computer_definition.write(open(filepath, 'w'))
     config.logger.info('Stored computer definition in %r' % filepath)
   computer.construct(alter_user=config.alter_user,
-      alter_network=config.alter_network, create_tap=not config.no_bridge)
+      alter_network=config.alter_network, create_tap=config.create_tap)
 
   # Dumping and sending to the erp5 the current configuration
   if not config.dry_run:
@@ -1023,6 +1019,7 @@ class Config(object):
   cert_file = None
   alter_network = None
   alter_user = None
+  create_tap = None
   computer_xml = None
   logger = None
   log_file = None
@@ -1083,6 +1080,8 @@ class Config(object):
       self.alter_user = 'True'
     if self.software_user is None:
       self.software_user = 'slapsoft'
+    if self.create_tap is None:
+      self.create_tap = True
 
     # set up logging
     self.logger = logging.getLogger("slapformat")
@@ -1091,7 +1090,7 @@ class Config(object):
       self.logger.addHandler(logging.StreamHandler())
 
     # Convert strings to booleans
-    for o in ['alter_network', 'alter_user', 'no_bridge']:
+    for o in ['alter_network', 'alter_user', 'create_tap']:
       attr = getattr(self, o)
       if isinstance(attr, str):
         if attr.lower() == 'true':
@@ -1108,12 +1107,12 @@ class Config(object):
     if not self.dry_run:
       if self.alter_user:
         self.checkRequiredBinary(['groupadd', 'useradd', 'usermod'])
-      if not self.no_bridge:
+      if self.create_tap:
         self.checkRequiredBinary(['tunctl'])
       if self.alter_network:
         self.checkRequiredBinary(['ip'])
     # Required, even for dry run
-    if self.alter_network and not self.no_bridge:
+    if self.alter_network and self.create_tap:
       self.checkRequiredBinary(['brctl'])
 
     # Check if root is needed
@@ -1152,8 +1151,8 @@ class Config(object):
       self.logger.debug("Verbose mode enabled.")
     if self.dry_run:
       self.logger.info("Dry-run mode enabled.")
-    if self.no_bridge:
-      self.logger.info("No-bridge mode enabled.")
+    if self.create_tap:
+      self.logger.info("Tap mode enabled.")
 
     # Calculate path once
     self.computer_xml = os.path.abspath(self.computer_xml)