removed "runthis" and other unused functions from utils.py

Fixes Bug #1012234

Removed all unused functions and imports from common/utils.py.

Patch set 2: Submitted same code by mistake
Patch set 3: removed commented code but inappropriate commit msg.
Patch set 4: removed commented code with appropriate commit msg. Removed pep8 changes for ucs plugin.

Change-Id: I0ec33be127ef0389685a378c6f8d39ce5cbdb58c

quantum/common/utils.py

@@ -22,13 +22,9 @@
 
 
 import ConfigParser
-import datetime
-import inspect
 import logging
 import os
-import random
 import subprocess
-import sys
 
 from quantum.common import exceptions as exception
 from quantum.common.exceptions import ProcessExecutionError
@@ -39,37 +35,6 @@ TIME_FORMAT = "%Y-%m-%dT%H:%M:%SZ"
 FLAGS = flags.FLAGS
 
 
-def int_from_bool_as_string(subject):
-    """
-    Interpret a string as a boolean and return either 1 or 0.
-
-    Any string value in:
-        ('True', 'true', 'On', 'on', '1')
-    is interpreted as a boolean True.
-
-    Useful for JSON-decoded stuff and config file parsing
-    """
-    return bool_from_string(subject) and 1 or 0
-
-
-def bool_from_string(subject):
-    """
-    Interpret a string as a boolean.
-
-    Any string value in:
-        ('True', 'true', 'On', 'on', '1')
-    is interpreted as a boolean True.
-
-    Useful for JSON-decoded stuff and config file parsing
-    """
-    if isinstance(subject, bool):
-        return subject
-    elif isinstance(subject, basestring):
-        if subject.strip().lower() in ('true', 'on', '1'):
-            return True
-    return False
-
-
 def boolize(subject):
     """
     Quak like a boolean
@@ -110,67 +75,6 @@ def execute(cmd, process_input=None, addl_env=None, check_exit_code=True):
     return result
 
 
-def abspath(s):
-    return os.path.join(os.path.dirname(__file__), s)
-
-
-# TODO(sirp): when/if utils is extracted to common library, we should remove
-# the argument's default.
-def default_flagfile(filename='quantum.conf'):
-    for arg in sys.argv:
-        if arg.find('flagfile') != -1:
-            break
-    else:
-        if not os.path.isabs(filename):
-            # turn relative filename into an absolute path
-            script_dir = os.path.dirname(inspect.stack()[-1][1])
-            filename = os.path.abspath(os.path.join(script_dir, filename))
-        if os.path.exists(filename):
-            sys.argv.insert(1, '--flagfile=%s' % filename)
-
-
-def debug(arg):
-    logging.debug('debug in callback: %s', arg)
-    return arg
-
-
-def runthis(prompt, cmd, check_exit_code=True):
-    logging.debug("Running %s" % (cmd))
-    exit_code = subprocess.call(cmd.split(" "))
-    logging.debug(prompt % (exit_code))
-    if check_exit_code and exit_code != 0:
-        raise ProcessExecutionError(exit_code=exit_code,
-                                    stdout=None,
-                                    stderr=None,
-                                    cmd=cmd)
-
-
-def generate_uid(topic, size=8):
-    return '%s-%s' % (topic, ''.join(
-        [random.choice('01234567890abcdefghijklmnopqrstuvwxyz')
-         for x in xrange(size)]))
-
-
-def generate_mac():
-    mac = [0x02, 0x16, 0x3e, random.randint(0x00, 0x7f),
-           random.randint(0x00, 0xff), random.randint(0x00, 0xff)]
-    return ':'.join(map(lambda x: "%02x" % x, mac))
-
-
-def last_octet(address):
-    return int(address.split(".")[-1])
-
-
-def isotime(at=None):
-    if not at:
-        at = datetime.datetime.utcnow()
-    return at.strftime(TIME_FORMAT)
-
-
-def parse_isotime(timestr):
-    return datetime.datetime.strptime(timestr, TIME_FORMAT)
-
-
 def get_plugin_from_config(file="config.ini"):
     Config = ConfigParser.ConfigParser()
     Config.read(file)