server: check guest os preference of last host when start a vm

[ustcweizhou]

Description

If vm has last host_id specified, cloudstack will try to start vm on it at first.
However, host tag is checked, but guest os preference is not checked.

for new vm, it will be deployed to the preferred host as we expect.

Fixes: #3554 (comment)

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?

[ravening]

Any reason to delete this log? Better to display if either tags or the guest os preference mismatches right?

[weizhouapache]

@ravening it is moved to method checkVmProfileAndHost line 573
https://github.com/apache/cloudstack/pull/4338/files#diff-33d8e6144eebe797af78210131747498R573

[DaanHoogland]

code lgtm

[DaanHoogland]

@blueorangutan package

[blueorangutan]

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

[blueorangutan]

Packaging result: ✔centos7 ✖centos8 ✔debian. JID-2073

[DaanHoogland]

@blueorangutan test

[blueorangutan]

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

[ravening]

LGTM

[blueorangutan]

Trillian test result (tid-2846)
Environment: kvm-centos7 (x2), Advanced Networking with Mgmt server 7
Total time taken: 46460 seconds
Marvin logs: https://github.com/blueorangutan/acs-prs/releases/download/trillian/pr4338-t2846-kvm-centos7.zip
Intermittent failure detected: /marvin/tests/smoke/test_kubernetes_supported_versions.py
Intermittent failure detected: /marvin/tests/smoke/test_privategw_acl.py
Smoke tests completed. 82 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	257.66	test_privategw_acl.py
test_03_vpc_privategw_restart_vpc_cleanup	Failure	341.11	test_privategw_acl.py
test_04_rvpc_privategw_static_routes	Failure	482.25	test_privategw_acl.py