vrouter: reload keepalived instead of restart and fix password server issues when add/remove vpc tier

[ustcweizhou]

Description

This fixes few issues below
(1) when add/remove a vpc tier, the keepalived is restarted on both master and backup VRs, which causes some seconds donwtime of vpc.
(2) when remove a vpc tier, the password server is not stopped.
(3) vpc tier is shutdown because no vm is running for 20 minutes, if we start a vm in the vpc tier, it will be implemented. however the guest ip in VPC VRs will be changed , and password server is still running with old guest ip in VRs.

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 @svenvogel @DennisKonrad
could you please test it if you use vpc ?

[yadvr]

@ustcweizhou does this require a new systemvmtemplate? Can you check the 4.14 systemvmtemplate (for haproxy etc) http://download.cloudstack.org/systemvm/4.14/

@blueorangutan package

[blueorangutan]

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

[yadvr]

@ustcweizhou can you split the PR into two as there are changes that are solely around growing partition and root disk size change.

[weizhouapache]

@rhtyd sorry I uploaded wrong branch :-(

[blueorangutan]

Packaging result: ✖centos6 ✔centos7 ✔debian. JID-916

[DaanHoogland]

need to go in teh 4.13.1 milestone , @weizhouapache ?

[yadvr]

@blueorangutan package

[yadvr]

LGTM, did not test it

[blueorangutan]

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

[yadvr]

@ustcweizhou can you check travis failure, see 1st job of travis -likely a python lint issue.

[blueorangutan]

Packaging result: ✖centos6 ✔centos7 ✔debian. JID-965

[yadvr]

@blueorangutan test

[yadvr]

@blueorangutan test

[blueorangutan]

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

[shwstppr]

Code lgtm, manual testing needed

[yadvr]

@andrijapanicsb @DaanHoogland manual testing needed here

[blueorangutan]

Trillian test result (tid-1147)
Environment: kvm-centos7 (x2), Advanced Networking with Mgmt server 7
Total time taken: 28020 seconds
Marvin logs: https://github.com/blueorangutan/acs-prs/releases/download/trillian/pr3898-t1147-kvm-centos7.zip
Intermittent failure detected: /marvin/tests/smoke/test_privategw_acl.py
Smoke tests completed. 76 look OK, 1 have error(s)
Only failed tests results shown below:

Test	Result	Time (s)	Test File
test_02_vpc_privategw_static_routes	Failure	179.66	test_privategw_acl.py
test_03_vpc_privategw_restart_vpc_cleanup	Failure	175.87	test_privategw_acl.py
test_04_rvpc_privategw_static_routes	Failure	250.59	test_privategw_acl.py