bug: hmac-auth plugin will not sort array value in param

[kevinw66]

Issue description

When I passing url like /api/xxx?age=123&name=123&a=2&a=1
this should be sorted as a=1&a=2&age=123&name=123
but I got a=2&a=1&age=2&name=1

Environment

• apisix version (cmd: apisix version):
• OS (cmd: uname -a):
• OpenResty / Nginx version (cmd: nginx -V or openresty -V):
• etcd version, if have (cmd: run curl http://127.0.0.1:9090/v1/server_info to get the info from server-info API):
• apisix-dashboard version, if have:
• the plugin runner version, if the issue is about a plugin runner (cmd: depended on the kind of runner):
• luarocks version, if the issue is about installation (cmd: luarocks --version):

Steps to reproduce

same as description

Actual result

same as description

Error log

same as description

Expected result

No response

[kevinw66]

How to run tests in local MacOS machine?
I try to run prove -I. -I../test-nginx/inc -I../test-nginx/lib -r t/plugin/hmac-auth.t but got many errors
like

Failed test 'TEST 24: verify ok with signed headers - pattern "[error]" should not match any line in error.log but matches line "2022/02/14 16:15:18 [error] 39160\#5720660: *48 lua entry thread aborted: runtime error: content_by_lua(nginx.conf:218):35: attempt to index local 't' (a number value)" (req 1)

Failed test 'TEST 25: add consumer with plugin hmac-auth - empty configuration - pattern "[error]" should not match any line in error.log but matches line "2022/02/14 16:15:19 [error] 39167\#5720674: *3 lua entry thread aborted: runtime error: ...ngye/Develop/Projects/Github/apisix/t/lib/test_admin.lua:18: module 'toolkit.json' not found:" (req 0)

[kevinw66]

Can anyone help me ? The unit tests is the most difficult part when I want to submit a pr.
@spacewander @starsz @bisakhmondal

[kevinw66]

Resolved by run git submodule update --init --recursive

[starsz]

Resolved by run git submodule update --init --recursive

Nice.