test: check more connectivity in test_privategw_acl.py

[ustcweizhou]

Description

in test_privategw_acl.py, we need to check connectivity not only vpc1 to vpc2, but also vpc2 to vpc1.

Related to: #3859

Types of changes

• Breaking change (fix or feature that would cause existing functionality to change)
• New feature (non-breaking change which adds functionality)
• Bug fix (non-breaking change which fixes an issue)
• Enhancement (improves an existing feature and functionality)
• Cleanup (Code refactoring and cleanup, that may add test cases)

Screenshots (if appropriate):

How Has This Been Tested?

[ustcweizhou]

@rhtyd @DaanHoogland can you kick a test ?
The test should succeed, but I suspect this will fail because I found a bug in the investigation on #3859.

[yadvr]

Sure.
@blueorangutan package

[blueorangutan]

@rhtyd a Jenkins job has been kicked to build packages. I'll keep you posted as I make progress.

[blueorangutan]

Packaging result: ✖centos6 ✔centos7 ✔debian. JID-742

[yadvr]

@blueorangutan test

[blueorangutan]

@rhtyd a Trillian-Jenkins test job (centos7 mgmt + kvm-centos7) has been kicked to run smoke tests

[blueorangutan]

Trillian test result (tid-883)
Environment: kvm-centos7 (x2), Advanced Networking with Mgmt server 7
Total time taken: 31546 seconds
Marvin logs: https://github.com/blueorangutan/acs-prs/releases/download/trillian/pr3861-t883-kvm-centos7.zip
Intermittent failure detected: /marvin/tests/smoke/test_internal_lb.py
Smoke tests completed. 77 look OK, 0 have error(s)
Only failed tests results shown below:

Test	Result	Time (s)	Test File