Remove reg_utils, unused file.

Moved WMI imports to be gated behind win32 check.
Set wmi package to be installed only on win32 platform.

The mongo_utils and wmi_utils modules are only imported by the windows_info_collector which is only imported if we're on windows.

monkey/common/utils/mongo_utils.py

@@ -1,5 +1,7 @@
-import wmi
+import sys
+if sys.platform == 'win32':
     import win32com
+    import wmi
 
 __author__ = 'maor.rayzin'
 

monkey/common/utils/reg_utils.py

@@ -1,25 +0,0 @@
-import winreg
-
-from common.utils.mongo_utils import MongoUtils
-
-__author__ = 'maor.rayzin'
-
-
-class RegUtils:
-
-    def __init__(self):
-        # Static class
-        pass
-
-    @staticmethod
-    def get_reg_key(subkey_path, store=winreg.HKEY_LOCAL_MACHINE):
-        key = winreg.ConnectRegistry(None, store)
-        subkey = winreg.OpenKey(key, subkey_path)
-
-        d = dict([winreg.EnumValue(subkey, i)[:2] for i in range(winreg.QueryInfoKey(subkey)[0])])
-        d = MongoUtils.fix_obj_for_mongo(d)
-
-        subkey.Close()
-        key.Close()
-
-        return d

monkey/infection_monkey/requirements.txt

@@ -13,7 +13,7 @@ ipaddress
 # See breaking change here: https://github.com/tjguk/wmi/commit/dcf8e3eca79bb8c0101ffb83e25c066b0ba9e16d
 # Causes pip to error with:
 # Could not find a version that satisfies the requirement pywin32 (from wmi->-r /src/infection_monkey/requirements.txt (line 12)) (from versions: none)
-wmi==1.4.9
+wmi==1.4.9 ; sys_platform == 'win32'
 pymssql<3.0
 pyftpdlib
 WinSys-3.x