Fix for deleting hostvethpair in transparent mode

[tamilmani1989]

…pace is deleted

Reason for Change:

The issue is that in transparent mode cni generates the veth pair names based on pod name and namespace. In this case, a new container with the same pod name and namespace called CNI ADD before the old container with the same pod name and namespace call CNI DEL. Due to this, when the old container issued CNI DEL, it deleted the veth host interface, in turn deleting the eth0(other veth) of the new container.

Issue Fixed:

Requirements:

• uses conventional commit messages
• includes documentation
• adds unit tests

Notes:

[codecov]

Codecov Report

Merging #775 (ace525a) into master (c133472) will increase coverage by 0.07%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #775      +/-   ##
==========================================
+ Coverage   41.68%   41.76%   +0.07%     
==========================================
  Files         142      142              
  Lines       13778    13773       -5     
==========================================
+ Hits         5744     5752       +8     
+ Misses       7317     7303      -14     
- Partials      717      718       +1     

[ashvindeodhar]

/lgtm