[mos-xenial] "ip netns list" can produce different output format

[Dmitry Burmistrov]

Detailed bug description:
 Here outputs from different environments, second one has different output
 root@14.04:~# ip netns list | tail -1
 vrouter
 root@16.04:~# ip netns list | tail -1
 haproxy (id: 0)
Steps to reproduce:
 Install Ubuntu 16.04 with iproute2=4.3.0-1ubuntu3, run "ip netns list" and check output.
Expected results:
 ocf scripts handle both outputs
Actual result:
 ocf scripts works only with 1st outputs
Reproducibility:
 -
Workaround:
 -
Impact:
 Launch MOS with Ubuntu 16.04
Description of the environment:
 Operation system: Ubuntu 16.04
 Versions of components: -
 Reference architecture: -
 Network model: -
 Related projects installed: -
Additional information:
 affected scripts:
   - ns_IPaddr2
   - ns_dns
   - ns_haproxy
   - ns_vrouter
 command/function: `ip netns list | grep "$OCF_RESKEY_ns"` # "check_ns" function
 In any case script should be smarter to handle both outputs.
 Maybe "check_ns" function can be extracted to "library" file with common functions (instead of duplicating code in all scripts).

[Dmitry Burmistrov (dmburmistrov)]

patch: https://review.openstack.org/#/c/313303/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/313303
Committed: https://git.openstack.org/cgit/openstack/fuel-library/commit/?id=d956661f743327e28b18092f2346a8dd11ea7faa
Submitter: Jenkins
Branch: master

commit d956661f743327e28b18092f2346a8dd11ea7faa
Author: dmburmistrov <email address hidden>
Date: Fri May 6 12:53:55 2016 +0300

    Accept "ip netns list" changed output format

    Now ip-netns also displays namespace ids,
    here are outputs:
    root@14.04:~# ip netns list | tail -1
    vrouter
    root@16.04:~# ip netns list | tail -1
    haproxy (id: 0)

    Closes-bug: #1580963

    Change-Id: I2966a19ef078f256464a93be549215648b036828

[Dmitry Burmistrov (dmburmistrov)]

Bug is still here. Backslash from awk was eaten by backticks. Backticks can be replaced with modern "$()" bash syntax. Or second backslash should be added.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/320399
Committed: https://git.openstack.org/cgit/openstack/fuel-library/commit/?id=8e8bbf305bc044b060282f8f09fca288f32b3202
Submitter: Jenkins
Branch: master

commit 8e8bbf305bc044b060282f8f09fca288f32b3202
Author: dmburmistrov <email address hidden>
Date: Tue May 24 14:55:08 2016 +0300

    Replace backticks with "$()" syntax

    Backticks eat backslash from awk
    expression.

    Closes-bug: #1580963

    Change-Id: I21b015b79e52e8dd1fcfccce0fd8dea2abd7a84e