Require ipactl be run as root to avoid a lot of misleading error msgs.

Trying to run ipactl as non-root results in a slew of bogus
error messages, some of which come because dirsrv can't read certain
files as the wrong user, some based on our handling of that fact.

ticket 936

install/tools/ipactl

@@ -20,6 +20,7 @@
 
 import sys
 try:
+    import os
     from ipaserver.install import service
     from ipaserver.install import dsinstance
     from ipapython import config
@@ -226,6 +227,8 @@ def ipa_status():
             print "Failed to get %s Service status" % svc
 
 def main():
+    if not os.getegid() == 0:
+        sys.exit("\nYou must be root to run ipactl.\n")
 
     safe_options, options, args = parse_options()