Fix warning when setup cloudstack-common

[ustcweizhou]

Description

This PR fixes the warnings below when install/setup cloudstack-common

Unpacking cloudstack-common (4.15.0.0-1607306448~bionic) over (4.15.0.0-SNAPSHOT~bionic) ...
Setting up cloudstack-common (4.15.0.0-1607306448~bionic) ...
/usr/lib/python3/dist-packages/cloud_utils.py:434: SyntaxWarning: "is" with a literal. Did you mean "=="?
if e.errno is 2: raise TaskFailed("augtool has not been properly installed on this system")
/usr/lib/python3/dist-packages/cloud_utils.py:649: SyntaxWarning: "is" with a literal. Did you mean "=="?
if e.errno is 2: raise TaskFailed("cgconfig has not been properly installed on this system")
/usr/lib/python3/dist-packages/cloud_utils.py:675: SyntaxWarning: "is" with a literal. Did you mean "=="?
if e.errno is 2: raise TaskFailed("cgrulesd has not been properly installed on this system")
/usr/lib/python3/dist-packages/cloud_utils.py:696: SyntaxWarning: "is" with a literal. Did you mean "=="?
if e.errno is 2: raise TaskFailed("qemu has not been properly installed on this system")
/usr/lib/python3/dist-packages/cloud_utils.py:715: SyntaxWarning: "is" with a literal. Did you mean "=="?
if e.errno is 2: raise TaskFailed("libvirt has not been properly installed on this system")
/usr/lib/python3/dist-packages/cloud_utils.py:745: SyntaxWarning: "is" with a literal. Did you mean "=="?
if e.errno is 2: raise TaskFailed("libvirt has not been properly installed on this system")

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)

Feature/Enhancement Scale or Bug Severity

Feature/Enhancement Scale

• Major
• Minor

Bug Severity

• BLOCKER
• Critical
• Major
• Minor
• Trivial

Screenshots (if appropriate):

How Has This Been Tested?

[yadvr]

@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: ✔centos7 ✔centos8 ✔debian. JID-2469

[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-3322)
Environment: kvm-centos7 (x2), Advanced Networking with Mgmt server 7
Total time taken: 32779 seconds
Marvin logs: https://github.com/blueorangutan/acs-prs/releases/download/trillian/pr4523-t3322-kvm-centos7.zip
Intermittent failure detected: /marvin/tests/smoke/test_kubernetes_clusters.py
Smoke tests completed. 86 look OK, 0 have error(s)
Only failed tests results shown below:

Test	Result	Time (s)	Test File