[PATCH net repost] selftests: net: check jq command is supported

[Wang Liang <wangliang74@huawei.com>]

The jq command is used in vlan_bridge_binding.sh, if it is not supported,
the test will spam the following log.

  # ./vlan_bridge_binding.sh: line 51: jq: command not found
  # ./vlan_bridge_binding.sh: line 51: jq: command not found
  # ./vlan_bridge_binding.sh: line 51: jq: command not found
  # ./vlan_bridge_binding.sh: line 51: jq: command not found
  # ./vlan_bridge_binding.sh: line 51: jq: command not found
  # TEST: Test bridge_binding on->off when lower down                   [FAIL]
  #       Got operstate of , expected 0

The rtnetlink.sh has the same problem. It makes sense to check if jq is
installed before running these tests. After this patch, the
vlan_bridge_binding.sh skipped if jq is not supported:

  # timeout set to 3600
  # selftests: net: vlan_bridge_binding.sh
  # TEST: jq not installed                                              [SKIP]

Fixes: dca12e9ab760 ("selftests: net: Add a VLAN bridge binding selftest")
Fixes: 6a414fd77f61 ("selftests: rtnetlink: Add an address proto test")
Signed-off-by: Wang Liang <wangliang74@huawei.com>
Reviewed-by: Hangbin Liu <liuhangbin@gmail.com>
---
 tools/testing/selftests/net/rtnetlink.sh           | 2 ++
 tools/testing/selftests/net/vlan_bridge_binding.sh | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/tools/testing/selftests/net/rtnetlink.sh b/tools/testing/selftests/net/rtnetlink.sh
index dbf77513f617..163a084d525d 100755
--- a/tools/testing/selftests/net/rtnetlink.sh
+++ b/tools/testing/selftests/net/rtnetlink.sh
@@ -1466,6 +1466,8 @@ usage: ${0##*/} OPTS
 EOF
 }
 
+require_command jq
+
 #check for needed privileges
 if [ "$(id -u)" -ne 0 ];then
 	end_test "SKIP: Need root privileges"
diff --git a/tools/testing/selftests/net/vlan_bridge_binding.sh b/tools/testing/selftests/net/vlan_bridge_binding.sh
index db481af9b6b3..e8c02c64e03a 100755
--- a/tools/testing/selftests/net/vlan_bridge_binding.sh
+++ b/tools/testing/selftests/net/vlan_bridge_binding.sh
@@ -249,6 +249,8 @@ test_binding_toggle_off_when_upper_down()
 	do_test_binding_off : "on->off when upper down"
 }
 
+require_command jq
+
 trap defer_scopes_cleanup EXIT
 setup_prepare
 tests_run
-- 
2.34.1