[dvs] Fix install instructions in README (sonic-net#1379)

Signed-off-by: Danny Allen <daall@microsoft.com>

tests/README.md

@@ -13,25 +13,29 @@ SWSS, Redis, and all the other required components run inside a virtual switch D
 
  ```
  sudo modprobe team
- sudo apt install net-tools ethtool vlan
- sudo pip3 install docker zipp==2.2.1 pytest==4.6.9 flaky redis distro==1.4.0
+ sudo apt install python3-pip net-tools ethtool vlan libnl-nf-3-200 libnl-cli-3-200
+ sudo pip3 install docker pytest flaky redis distro
+ ```
+
+ If you are running **Ubuntu 18.04** you will need to install this package:
+ ```
+ sudo apt install libhiredis0.13
+ ```
+
+ If you are running **Ubuntu 20.04** you will need to install this package:
+ ```
+ sudo apt install libhiredis0.14
  ```
 3. Install `python3-swsscommon_1.0.0_amd64.deb`. You will need to install all the dependencies as well in the following order:
 
  ```
- sudo dpkg -i libnl-3-200_3.5.0-1_amd64.deb
- sudo dpkg -i libnl-genl-3-200_3.5.0-1_amd64.deb
- sudo dpkg -i libnl-route-3-200_3.5.0-1_amd64.deb
- sudo dpkg -i libnl-nf-3-200_3.5.0-1_amd64.deb
- sudo dpkg -i libhiredis0.14_0.14.0-3~bpo9+1_amd64.deb
  sudo dpkg -i libswsscommon_1.0.0_amd64.deb
- sudo dpkg -i python-swsscommon_1.0.0_amd64.deb
+ sudo dpkg -i python3-swsscommon_1.0.0_amd64.deb
  ```
 
- You can find the dependencies [here](https://sonic-jenkins.westus2.cloudapp.azure.com/job/vs/job/buildimage-vs-all/lastSuccessfulBuild/artifact/target/debs/stretch/), and get this package by:
+ You can get these two packages by:
  - [Building it from scratch](https://github.com/Azure/sonic-swss-common)
- - Downloading the latest build from Jenkins
- - [Debian](https://sonic-jenkins.westus2.cloudapp.azure.com/job/common/job/sonic-swss-common-build/lastSuccessfulBuild/artifact/target/)
+ - Downloading the latest build from Jenkins:
  - [Ubuntu 18.04](https://sonic-jenkins.westus2.cloudapp.azure.com/job/common/job/sonic-swss-common-build-ubuntu/lastSuccessfulBuild/artifact/target/)
  - [Ubuntu 20.04](https://sonic-jenkins.westus2.cloudapp.azure.com/job/common/job/sonic-swss-common-build-ubuntu-20_04/lastSuccessfulBuild/artifact/target/)
 4. Load the `docker-sonic-vs.gz` file into docker. You can get the image by: