DPDK init scripts need some hardening against broken specifications in /etc/dpdk/interfaces

Changes would be ready for upload now.

I'll attach a debdiff dpdk_2.2.0-0ubuntu3-to-2.2.0-0ubuntu4.debdiff
But for much easier review change by change I would recommend https://git.launchpad.net/~ubuntu-server/dpdk/?h=ubuntu-xenial-to-dpdk2.2
The respective content of this upload is from tag "debian/2.2.0-0ubuntu3" until the head of the branch.

Overall it will fix this and three other bugs plus a few minor issues - here the changelog FYI

dpdk (2.2.0-0ubuntu4) xenial; urgency=medium

  * harden d/dpdk-init for configuration issues (LP: #1551601):
     - detect and warn about bad bus specifications
     - detect and warn about incomplete device specifications
     - detect and warn about non existing pci IDs
     - d/t/test-initscripts now testing various misconfigs
     - d/t/test-initscripts now also verifying service status
  * d/dpdk-init d/dpdk.conf now also support 1G hugepages (LP: #1551767):
     - detect and warn if 1G pages are not available but configured
     - d/t/test-initscripts now also testing hugepage allocations
     - d/dpdk.conf has an option to drop caches to incease the likeliness of
       successful 1G hugepage allocations (default off)
  * d/rules replaced uname -m with DEB_HOST_GNU_CPU (LP: #1551796):
  * fix testpmd to run without Xen environment (LP: #1551752):
     - upstream discussion is slow, but we need a fix now. We can drop this
       and change to the upstream solution when it is available.
  * unify whitespace/tabs in packaging and scripts
     - tabs/spaces to just spaces in d/dpdk-init and d/dpdk.init
     - few to tabs in d/rules
  * d/t/test-* now satisfy shellcheck
  * d/* fix various comments and guides to be more readable
  * d/dpdk-init and d/copyright updated copyright information

dpdk (2.2.0-0ubuntu4) xenial; urgency=medium

  * harden d/dpdk-init for configuration issues (LP: #1551601):
     - detect and warn about bad bus specifications
     - detect and warn about incomplete device specifications
     - detect and warn about non existing pci IDs
     - d/t/test-initscripts now testing various misconfigs
     - d/t/test-initscripts now also verifying service status
  * d/dpdk-init d/dpdk.conf now also support 1G hugepages (LP: #1551767):
     - detect and warn if 1G pages are not available but configured
     - d/t/test-initscripts now also testing hugepage allocations
     - d/dpdk.conf has an option to drop caches to incease the likeliness of
       successful 1G hugepage allocations (default off)
  * d/rules replaced uname -m with DEB_HOST_GNU_CPU (LP: #1551796):
  * fix testpmd to run without Xen environment (LP: #1551752):
     - upstream discussion is slow, but we need a fix now. We can drop this
       and change to the upstream solution when it is available.
  * unify whitespace/tabs in packaging and scripts
     - tabs/spaces to just spaces in d/dpdk-init and d/dpdk.init
     - few to tabs in d/rules
  * d/t/test-* now satisfy shellcheck
  * d/* fix various comments and guides to be more readable
  * d/dpdk-init and d/copyright updated copyright information

Since there was no update yet I wrapped in another minor enhancement that is tied directly with this LP Bug.
Git repository is updated as well.

Found an uploader, wrapping two more fixes before that.
Therefore removing the debdiff and sponsors subscription from this bug for now.

This bug was fixed in the package dpdk - 2.2.0-0ubuntu5

---------------
dpdk (2.2.0-0ubuntu5) xenial; urgency=medium

  * d/t/test-initscripts fix issues regarding 1G hugepages
     - the dep8 was already taking care of 1G hugepages being not supported in
       some environments. But it was failing when supported, but not enough
       memory available.

 -- Christian Ehrhardt <email address hidden> Wed, 09 Mar 2016 17:19:24 +0000