ui: add memory used column in instance metrics view

[yadvr]

Problem: The metrics view for instances does not show used memory.
Root Cause: Used memory was not added as a column in the metrics view for instances.
Solution: Metrics view for instances makes ‘listVirtualMachineMetrics’ API call to gather metrics. The response of this API call contains total and free memory with the instance. These have been used to compute used memory as a percentage of total memory and displayed as a new column in UI. Also fixes
a bug for VMware, due to which incorrect memory usage was returned.

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)

[borisstoyanov]

@blueorangutan package

[blueorangutan]

@borisstoyanov 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-2658

[borisstoyanov]

@blueorangutan test

[blueorangutan]

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

[blueorangutan]

Trillian test result (tid-3455)
Environment: kvm-centos7 (x2), Advanced Networking with Mgmt server 7
Total time taken: 32818 seconds
Marvin logs: https://github.com/blueorangutan/acs-prs/releases/download/trillian/pr3243-t3455-kvm-centos7.zip
Intermittent failure detected: /marvin/tests/smoke/test_privategw_acl.py
Intermittent failure detected: /marvin/tests/smoke/test_vpc_redundant.py
Smoke tests completed. 69 look OK, 1 have error(s)
Only failed tests results shown below:

Test	Result	Time (s)	Test File
test_05_rvpc_multi_tiers	Failure	429.66	test_vpc_redundant.py
test_05_rvpc_multi_tiers	Error	460.46	test_vpc_redundant.py

[borisstoyanov]

LGTM, now following is available:
"memory": 512,
"memoryintfreekbs": 393216,
"memorykbs": 524288,
"memorytargetkbs": 524288,
"memorytotal": "0.50 GB",

[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: ✔centos6 ✔centos7 ✔debian. JID-2776

[borisstoyanov]

Here's a screenshot of another similar instance

[DagSonsteboSB]

LGTM

[borisstoyanov]

@rhtyd I think we're OK for merging this

[andrijapanicsb]

LGTM

[yadvr]

Thanks all.