Scripts neutron-netns-cleanup does not delete namespaces without key --force

[Egor Kotko]

I was trying to reproduce https://bugs.launchpad.net/mos/+bug/1499729

Steps were:
root@node-6:~# ip netns | grep -c qdhcp
3
 * Create 2k namespaces:
   for i in {1000..2999}; do ip netns add "qdhcp-6a6302b1-37a7-4142-a11d-5be2778f$i" ; done
 * Run q-agent-cleanup:
   neutron-netns-cleanup --config-file=/etc/neutron/neutron.conf --config-file=/etc/neutron/dhcp_agent.ini
after command execution:
root@node-6:~# ip netns | grep -c qdhcp
2001

add key --force in the command and it works fine.

Cluster Configuration:
Baremetal, Ubuntu, HA,Neutron-VLAN, Default storages, 3Comtrollers, 1 Compute, 1Cinder+Compute

ISO #506

[Sergey Belous (sbelous)]

Fix is on review https://review.fuel-infra.org/#/c/25616

[Sergii Turivnyi (sturivnyi)]

Was tested on snapshot #315

root@node-2:~# ip netns | grep -c qdhcp
3
root@node-2:~# for i in {1000..2999}; do ip netns add "qdhcp-6a6302b1-37a7-4142-a11d-5be2778f$i" ;

root@node-2:~# neutron-netns-cleanup --config-file=/etc/neutron/neutron.conf --config-file=/etc/neutron/dhcp_agent.ini
Guru mediation now registers SIGUSR1 and SIGUSR2 by default for backward compatibility. SIGUSR1 will no longer be registered in a future release, so please use SIGUSR2 to generate reports.
Option "verbose" from group "DEFAULT" is deprecated for removal. Its value may be silently ignored in the future.

root@node-2:~# ip netns | grep -c qdhcp
3

[Fuel Devops McRobotson (fuel-devops-robot)]

Fix proposed to branch: 11.0/ocata
Change author: Sergey Belous <email address hidden>
Review: https://review.fuel-infra.org/34183

[Fuel Devops McRobotson (fuel-devops-robot)]

Fix proposed to branch: mcp/ocata
Change author: Sergey Belous <email address hidden>
Review: https://review.fuel-infra.org/34923

[Fuel Devops McRobotson (fuel-devops-robot)]

Change abandoned by Roman Podoliaka <email address hidden> on branch: 11.0/ocata
Review: https://review.fuel-infra.org/34183
Reason: we do not need 11.0/ocata anymore - use mcp/ocata instead

[Fuel Devops McRobotson (fuel-devops-robot)]

Change abandoned by Alexander Ignatov <email address hidden> on branch: mcp/newton
Review: https://review.fuel-infra.org/33830
Reason: This was mos-specific patch. Not required for Newton as well as Ocata.

[Fuel Devops McRobotson (fuel-devops-robot)]

Change abandoned by Alexander Ignatov <email address hidden> on branch: mcp/ocata
Review: https://review.fuel-infra.org/34923
Reason: This was mos-specific patch. Not required for Newton as well as Ocata.