test-runner now supports interface name replacement inside hostapd
config files. Since a given test configuration doesn't know what
interface names there will be $ifaceN can be specified instead e.g.

rsn_preauth_interfaces=$iface0 $iface1

The $ifaceN values will be replace with actual interface names when
the test is started.

This patch also removes ctrl_interface inside the hostapd config
files as this is no longer required.
---
 autotests/testPreauth-roam/eaptls-preauth-1.conf | 3 +--
 autotests/testPreauth-roam/eaptls-preauth-2.conf | 3 +--
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/autotests/testPreauth-roam/eaptls-preauth-1.conf b/autotests/testPreauth-roam/eaptls-preauth-1.conf
index 0c7f96a7..bc808ed7 100644
--- a/autotests/testPreauth-roam/eaptls-preauth-1.conf
+++ b/autotests/testPreauth-roam/eaptls-preauth-1.conf
@@ -2,7 +2,6 @@ hw_mode=g
 channel=1
 ssid=TestPreauth
 utf8_ssid=1
-ctrl_interface=/var/run/hostapd
 
 wpa=2
 wpa_key_mgmt=WPA-EAP
@@ -24,7 +23,7 @@ radius_server_auth_port=1812
 nas_identifier=testeap1
 
 rsn_preauth=1
-rsn_preauth_interfaces=wln0 wln1
+rsn_preauth_interfaces=$iface0 $iface1
 disable_pmksa_caching=0
 
 # Allow PMK cache to be shared opportunistically among configured interfaces
diff --git a/autotests/testPreauth-roam/eaptls-preauth-2.conf b/autotests/testPreauth-roam/eaptls-preauth-2.conf
index bddcca69..6d3a18e7 100644
--- a/autotests/testPreauth-roam/eaptls-preauth-2.conf
+++ b/autotests/testPreauth-roam/eaptls-preauth-2.conf
@@ -2,7 +2,6 @@ hw_mode=g
 channel=2
 ssid=TestPreauth
 utf8_ssid=1
-ctrl_interface=/var/run/hostapd
 
 wpa=2
 wpa_key_mgmt=WPA-EAP
@@ -20,7 +19,7 @@ auth_server_port=1812
 auth_server_shared_secret=secret
 
 rsn_preauth=1
-rsn_preauth_interfaces=wln0 wln1
+rsn_preauth_interfaces=$iface0 $iface1
 disable_pmksa_caching=0
 
 # Allow PMK cache to be shared opportunistically among configured interfaces
-- 
2.26.2