Extends bp/windows-support submission 98383

Move support for PoSH-Ohai into its own provider module.
Raise UnsupportedPlatform exceptions in ohai_solo.py
when the client is non-linux, and raise the same
exception in posh_ohai.py when the client is non-windows.

Define a unicode function via utils.py which is python2
and python3 compatible. Replace the unicode function
previously defined in ohai_solo.py with this.

Many style fixes, and trimming some code.
Fixes test_dns.py from change in python-whois.
Updates pep8 requirement from jcrocholl/pep8 Issue#240:
    Fix was merged into pep8 1.5.7
Updates hacking requirement to fix VersionConflict

Change-Id: I0b33d632d157d5219bfee25b669408885f03b873
Implements: blueprint windows-support

satori/common/templating.py

@@ -116,7 +116,7 @@ def parse(template, extra_globals=None, env_vars=None, **kwargs):
 
     try:
         result = template.render(**minimum_kwargs)
-        #TODO(zns): exceptions in Jinja template sometimes missing traceback
+        # TODO(zns): exceptions in Jinja template sometimes missing traceback
     except jinja2.TemplateError as exc:
         LOG.error(exc, exc_info=True)
         error_message = "Template had an error: %s" % exc

satori/discovery.py

@@ -55,10 +55,10 @@ def run(target, config=None, interactive=False):
         hostname = dns.parse_target_hostname(target)
         found['hostname'] = hostname
         ip_address = six.text_type(dns.resolve_hostname(hostname))
-        #TODO(sam): Use ipaddress.ip_address.is_global
-        #                   "               .is_private
-        #                   "               .is_unspecified
-        #                   "               .is_multicast
+        # TODO(sam): Use ipaddress.ip_address.is_global
+        #                                    .is_private
+        #                                    .is_unspecified
+        #                                    .is_multicast
         #       To determine address "type"
         if not ipaddress.ip_address(ip_address).is_loopback:
             try:

satori/smb.py

@@ -95,7 +95,7 @@ def __init__(self, host, password=None, username="Administrator",
         self.ssh_tunnel = None
         self._substituted_command = None
 
-        #creating temp file to talk to _process with
+        # creating temp file to talk to _process with
         self._file_write = tempfile.NamedTemporaryFile()
         self._file_read = open(self._file_write.name, 'r')