Use virtualenv for reclass-tools

virtualenv /root/venv-reclass-tools

Change-Id: Ie1a95ec99fa999d79fcb9594090417cb90f5e5f6
diff --git a/tcp_tests/templates/virtual-mcp-ocata-dvr/salt.yaml b/tcp_tests/templates/virtual-mcp-ocata-dvr/salt.yaml
index 7b39455..689dcf4 100644
--- a/tcp_tests/templates/virtual-mcp-ocata-dvr/salt.yaml
+++ b/tcp_tests/templates/virtual-mcp-ocata-dvr/salt.yaml
@@ -21,6 +21,8 @@
   cmd: |
     set -e;
     apt-get -y install python-virtualenv python-pip build-essential python-dev libssl-dev;
+    [[ -d /root/venv-reclass-tools ]] || virtualenv /root/venv-reclass-tools;
+    . /root/venv-reclass-tools/bin/activate;
     pip install git+https://github.com/dis-xcom/reclass-tools;
 
     # Combine 'dns' role with compute nodes