Build 2735: Change disk usage alarm threshold

[Ankit Jain]

We are raising disk usage alarm when disk usage touches around 50%.

"json_vars": {

    "DatabaseUsageInfo.database_usage.disk_space_available_1k": "39079332",
    "DatabaseUsageInfo.database_usage.disk_space_used_1k": "38730840"

}

Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/nodeg13--vg-root 81998536 38741220 39068952 50% /
none 4 0 4 0% /sys/fs/cgroup
udev 16449456 12 16449444 1% /dev
tmpfs 3292140 588 3291552 1% /run
none 5120 0 5120 0% /run/lock
none 16460696 0 16460696 0% /run/shm
none 102400 0 102400 0% /run/user
/dev/sda1 240972 67686 160845 30% /boot

As per mail,

It can be considered to change to the same level as purge threshold (70%)

[Sundaresan Rajangam (srajanga)]

Discussed with Raj and decided to raise the alarm if the usage crosses 90%

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/21261
Submitter: Nikhil Bansal (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/21261
Committed: http://github.org/Juniper/contrail-controller/commit/0a70dc50cbcad6ae573001f7c1c0ff4f5e6405af
Submitter: Zuul
Branch: master

commit 0a70dc50cbcad6ae573001f7c1c0ff4f5e6405af
Author: Nikhil B <email address hidden>
Date: Fri Jun 17 15:50:28 2016 +0530

Increasing threshold of disk usage alarm to 90

Earlier threshold of 50% was too low, increasing it to 90%
Closes-Bug: 1593172

Change-Id: I31beb83c3aff2c935f774c4d255151593f99ffb1

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/21318
Submitter: Nikhil Bansal (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/21318
Committed: http://github.org/Juniper/contrail-controller/commit/7b1ed9bb97489666c436cb7bc47b531a740ac385
Submitter: Zuul
Branch: R3.0

commit 7b1ed9bb97489666c436cb7bc47b531a740ac385
Author: Nikhil B <email address hidden>
Date: Tue Jun 21 08:39:30 2016 +0530

Increasing threshold of disk usage alarm to 90

Earlier threshold of 45% was too low, increasing it to 90%
Closes-Bug: 1593172

Change-Id: I688357b3dbcd7444bb00013e46ade18e31c86177