Fixed old name and added accidentaly deleted function

Change-Id: I7f78f12f0163173cd52ece7985006db61fdc56c3

packstack/installer/run_setup.py

@@ -640,7 +640,7 @@ def generateAnswerFile(outputFile, overrides={}):
 def single_step_aio_install(options):
     """ Installs an All in One host on this host"""
 
-    options.install_hosts = utils.getLocalhostIP()
+    options.install_hosts = utils.get_localhost_ip()
 
     # Also allow the command line to set values for any of these options
     # by testing if they have been set before we set them here

packstack/installer/utils/__init__.py

@@ -2,7 +2,7 @@
 
 from .datastructures import SortedDict
 from .decorators import retry
-from .network import get_localhost_ip, host2ip, force_ip
+from .network import get_localhost_ip, host2ip, force_ip, device_from_ip
 from .shell import ScriptRunner, execute
 from .strings import color_text, mask_string
 
@@ -10,5 +10,5 @@ from .strings import color_text, mask_string
 __all__ = ('SortedDict',
            'retry',
            'ScriptRunner', 'execute',
-           'get_localhost_ip', 'host2ip', 'force_ip',
+           'get_localhost_ip', 'host2ip', 'force_ip', 'device_from_ip',
            'color_text', 'mask_string')

packstack/installer/utils/network.py

@@ -3,7 +3,7 @@
 import re
 import socket
 
-from .shell import execute
+from .shell import execute, ScriptRunner
 
 
 def get_localhost_ip():
@@ -72,3 +72,14 @@ def force_ip(host, allow_localhost=False):
     if not ipv4_regex.match(host) or not ipv6_regex.match(host):
         host = host2ip(host, allow_localhost=allow_localhost)
     return host
+
+
+def device_from_ip(ip):
+    server = ScriptRunner()
+    server.append("DEVICE=$(ip address show to %s | head -n 1 |"
+                  " sed -e 's/.*: \(.*\):.*/\\1/g')" % ip)
+    # Test device, raises an exception if it doesn't exist
+    server.append("ip link show \"$DEVICE\" > /dev/null")
+    server.append("echo $DEVICE")
+    rv, stdout = server.execute()
+    return stdout.strip()