tests: Speed up tshark operations

Hide /usr/share/wireshark from hostfs to prevent tshark from loading all
the data from there since that can take significant amount of time and
is not really needed for the test cases. In addition, set HOME to point
to local tmpfs to avoid unnecessary references through hostfs.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>

tests/hwsim/vm/inside.sh

@@ -15,11 +15,16 @@ mount sysfs -t sysfs /sys
 # needed for tracing
 mount debugfs -t debugfs /sys/kernel/debug
 
+mkdir /tmp/wireshark-share
+mount --bind /usr/share/wireshark /tmp/wireshark-share
+mount tmpfs -t tmpfs /usr/share/wireshark
+
 # for inside telnet
 mkdir /dev/pts
 mount devpts -t devpts /dev/pts
 
 export PATH=/usr/sbin:$PATH
+export HOME=/tmp
 
 # reboot on any sort of crash
 sysctl kernel.panic_on_oops=1