ONME-3983 Fix the defects found in IPV4 testing against packet dropping

[mtomczykmobica]

Description

For support echo server with dropping packages (up to 20% packages lost) tests need more time to finish. All timeouts increase form 5s to 20s.

Pull request type

[ ] Fix
[ ] Refactor
[ ] Target update
[ ] Functionality change
[ ] Docs update
[x] Test update
[ ] Breaking change

[0xc0170]

/morph build

[0xc0170]

@ARMmbed/mbed-os-test Please review jenkins-ci build errors (I located only failure to find build folder)

[mbed-ci]

Test run: FAILED

Summary: 4 of 6 test jobs failed
Build number : 2
Build artifacts
Build logs

Failed test jobs:

• jenkins-ci/mbed-os-ci_mbed2-build-ARM
• jenkins-ci/mbed-os-ci_mbed2-build-GCC_ARM
• jenkins-ci/mbed-os-ci_build-ARM
• jenkins-ci/mbed-os-ci_mbed2-build-IAR

[0xc0170]

^^ (test run comment) @timurh01

[mbed-ci]

Build : SUCCESS

Build number : 3671
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/8764/

Triggering tests

/morph test
/morph export-build
/morph mbed2-build

[mbed-ci]

Exporter Build : SUCCESS

Build number : 3274
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/exporter/8764/

[mbed-ci]

Test : FAILURE

Build number : 3444
Test logs :http://mbed-os-logs.s3-website-us-west-1.amazonaws.com/?prefix=logs/8764/3444

[0xc0170]

^^ known issue, we are investigating

[0xc0170]

Restarted 2 build jobs, should complete soon

[0xc0170]

@ARMmbed/mbed-os-test This is ready for merge, last check - test jenkins/pr-head looks like "skipped", is that OK or restart needed?

[0xc0170]

Info: This PR has been re-bundled into a new rollup PR (#8862).

No further work is needed here, as once that PR is merged, this PR will also be closed and marked as merged.
If any more commits are made in this PR, this PR will remain open and have to go through CI on its own.