pkg/openthread: migrate to ztimer

[aabadie]

Contribution description

This PR migrates the openthread package to ztimer (using msec). It's quite straight forward.

Testing procedure

• Green CI
• examples/openthread is still working (untested yet)

Issues/PRs references

[aabadie]

Some output of this PR with M3 from IoT-LAB Grenoble:

abadie@grenoble:~$ serial_aggregator 
1637758683.703259;Aggregator started
# Only M3-2 and M3-7 are up at the beginning:
1637758809.125899;m3-2;main(): This is RIOT! (Version: 2022.01-devel-701-ge8cf-pr/pkg/openthread_ztimer)
1637758809.126672;m3-2;This is an OpenThread example
1637758809.126855;m3-2;Current panid: 0xbeef
1637758809.273554;m3-7;main(): This is RIOT! (Version: 2022.01-devel-701-ge8cf-pr/pkg/openthread_ztimer)
1637758809.273821;m3-7;This is an OpenThread example
1637758809.274288;m3-7;Current panid: 0xbeef

# just after flashing m3-2 and m3-7, m3-7 is the leader while m3-2 is a child
state
1637758826.628359;m3-2;state
1637758826.628623;m3-2;child
1637758826.628777;m3-2;Done
1637758826.629876;m3-7;state
1637758826.629969;m3-7;leader
1637758826.630046;m3-7;Done

# after some time, m3-2 becomes a router:
state
1637758945.561238;m3-7;> state
1637758945.562017;m3-2;> state
1637758945.562158;m3-2;router
1637758945.562260;m3-2;Done
1637758945.562376;m3-7;leader
1637758945.562476;m3-7;Done


# Start other nodes and flash them:
1637758950.418210;m3-17;> main(): This is RIOT! (Version: 2022.01-devel-701-ge8cf-pr/pkg/openthread_ztimer)
1637758950.419097;m3-17;This is an OpenThread example
1637758950.419246;m3-17;Current panid: 0xbeef
1637758950.483492;m3-30;> main(): This is RIOT! (Version: 2022.01-devel-701-ge8cf-pr/pkg/openthread_ztimer)
1637758950.483756;m3-30;This is an OpenThread example
1637758950.484228;m3-30;Current panid: 0xbeef
1637758950.576080;m3-12;> main(): This is RIOT! (Version: 2022.01-devel-701-ge8cf-pr/pkg/openthread_ztimer)
1637758950.576304;m3-12;This is an OpenThread example
1637758950.576870;m3-12;Current panid: 0xbeef

# After some time, all but m3-7 (leader) are routers:
state
1637759121.583709;m3-2;> state
1637759121.584006;m3-2;router
1637759121.584126;m3-2;Done
1637759121.584483;m3-30;state
1637759121.584617;m3-7;> state
1637759121.584717;m3-7;leader
1637759121.584801;m3-7;Done
1637759121.584942;m3-17;state
1637759121.585032;m3-17;router
1637759121.585156;m3-17;Done
1637759121.585295;m3-12;state
1637759121.585380;m3-12;router
1637759121.585495;m3-12;Done
1637759121.585810;m3-30;router
1637759121.585916;m3-30;Done

# ping works:
ipaddr
1637759160.088879;m3-17;> ipaddr
1637759160.089174;m3-30;> ipaddr
1637759160.089501;m3-7;> ipaddr
1637759160.089622;m3-7;fdde:ad00:beef:0:0:ff:fe00:fc00
1637759160.089874;m3-12;> ipaddr
1637759160.090003;m3-17;fdde:ad00:beef:0:0:ff:fe00:8800
1637759160.090111;m3-2;> ipaddr
1637759160.090265;m3-2;fdde:ad00:beef:0:0:ff:fe00:e800
1637759160.090410;m3-2;fdde:ad00:beef:0:58f7:e012:4943:8d
1637759160.090519;m3-30;fdde:ad00:beef:0:0:ff:fe00:ec00
1637759160.090638;m3-30;fdde:ad00:beef:0:55f:8f06:8092:35c8
1637759160.090778;m3-17;fdde:ad00:beef:0:3872:ef0c:e27:2db
1637759160.090881;m3-2;fe80:0:0:0:34cf:5229:d4a7:453b
1637759160.090973;m3-2;Done
1637759160.091084;m3-7;fdde:ad00:beef:0:0:ff:fe00:cc00
1637759160.091345;m3-12;fdde:ad00:beef:0:0:ff:fe00:3800
1637759160.091439;m3-12;fdde:ad00:beef:0:746d:761a:c012:ec7e
1637759160.091589;m3-30;fe80:0:0:0:ec09:a34c:e703:11d9
1637759160.091683;m3-30;Done
1637759160.091783;m3-7;fdde:ad00:beef:0:fdb0:4fb9:9896:8e3b
1637759160.091915;m3-17;fe80:0:0:0:6479:52ac:ff2:a8b2
1637759160.091997;m3-17;Done
1637759160.092300;m3-7;fe80:0:0:0:54a9:cd8c:4322:85e3
1637759160.092421;m3-7;Done
1637759160.092637;m3-12;fe80:0:0:0:d8c6:f947:48e8:3a3f
1637759160.092731;m3-12;Done
m3-2;ping fdde:ad00:beef:0:0:ff:fe00:ec00
1637759173.750178;m3-2;> ping fdde:ad00:beef:0:0:ff:fe00:ec00
1637759173.750426;m3-2;Done
1637759173.774060;m3-2;> 16 bytes from fdde:ad00:beef:0:0:ff:fe00:ec00: icmp_seq=1 hlim=64 time=23ms

[fjmolinas]

@jia200x is the test output enough for you?

[jia200x]

yes! it makes sense

[jia200x]

ACK

[fjmolinas]

ACK, test output is provided