8285915: failure_handler: gather the contents of /etc/hosts file

Backport-of: 45ca81ff5f25ce7927c5debc2f89b41246b91b92

Author: GoeLin

test/failure_handler/src/share/conf/linux.properties

@@ -80,7 +80,7 @@ environment=\
         memory.vmstat.slabinfo memory.vmstat.disk \
   files \
   locks \
-  net.sockets net.statistics net.ifconfig \
+  net.sockets net.statistics net.ifconfig net.hostsfile \
   screenshot
 ################################################################################
 users.current.app=id
@@ -127,6 +127,9 @@ net.statistics.args=-sv
 net.ifconfig.app=ifconfig
 net.ifconfig.args=-a
 
+net.hostsfile.app=cat
+net.hostsfile.args=/etc/hosts
+
 screenshot.app=bash
 screenshot.args=-c\0\
     echo '\

test/failure_handler/src/share/conf/mac.properties

@@ -89,7 +89,7 @@ environment=\
   process.ps process.top \
   memory.vmstat \
   files \
-  net.netstat.av net.netstat.aL net.netstat.m net.netstat.s net.ifconfig \
+  net.netstat.av net.netstat.aL net.netstat.m net.netstat.s net.ifconfig net.hostsfile \
   scutil.nwi scutil.proxy \
   screenshot
 ################################################################################
@@ -131,6 +131,9 @@ net.netstat.s.args=-s
 net.ifconfig.app=ifconfig
 net.ifconfig.args=-a
 
+net.hostsfile.app=cat
+net.hostsfile.args=/etc/hosts
+
 scutil.app=scutil
 scutil.nwi.args=--nwi
 scutil.proxy.args=--proxy

test/failure_handler/src/share/conf/windows.properties

@@ -75,7 +75,7 @@ environment=\
   memory.free memory.vmstat.default memory.vmstat.statistics \
         memory.vmstat.slabinfo memory.vmstat.disk \
   files \
-  net.sockets net.statistics net.ipconfig \
+  net.sockets net.statistics net.ipconfig net.hostsfile \
   screenshot
 ################################################################################
 users.current.app=id
@@ -125,6 +125,10 @@ net.statistics.args=-s -e
 net.ipconfig.app=ipconfig
 net.ipconfig.args=/all
 
+net.hostsfile.app=bash
+net.hostsfile.args.delimiter=\0
+net.hostsfile.args=-c\0cat $WINDIR/System32/drivers/etc/hosts
+
 screenshot.app=bash
 screenshot.args=-c\0\
     echo '\