CA-305355: Bumping dracut timeout default up to 3min for 4.19 kernel

SR-IOV tests are currently failing due to initrd building being
a bit slower sometimes for Linux 4.19 (~5s more then the current
default).

Signed-off-by: Igor Druzhinin <[email protected]>

Author: Igor Druzhinin

lib/network_utils.ml

@@ -51,7 +51,7 @@ let bonding_dir = "/proc/net/bonding/"
 let uname = ref "/usr/bin/uname"
 let dracut = ref "/sbin/dracut"
 let modinfo = ref "/sbin/modinfo"
-let dracut_timeout = ref 120.0
+let dracut_timeout = ref 180.0
 let fcoedriver = ref "/opt/xensource/libexec/fcoe_driver"
 let inject_igmp_query_script = ref "/usr/libexec/xenopsd/igmp_query_injector.py"
 let mac_table_size = ref 10000