Set up before test execution

[j-suarezp]

Implement a dicard changes y cancel commit before the execution of each test

[oscargdd]

Discard changes is implemented. Still missing the cancel commit.

[oscargdd]

discard changes must be a feature of the test and not "hardcoded" as part of the test.

[crcampos612]

Date: 15/02/2021

Username: Carlos Rodriguez

Issue: Device ( clean ) setup before each test execution

As a:

For devices where candidate datastore is not supported, but only running, tests don't work because netconf discard-changes operation can't be executed as candidate datastore doesn't exist. That operation discard-changes discards any uncommitted changes by resetting the candidate configuration with the content of the running configuration.

An enhancement would be read the device capability when netconf session is started ( netconf hello message ) and in case it isn't supported then skip discard-changes operation at the beginning of test flow.

I want:

1.- After opening a netconf session with the device, seek for this line announcing candidate support capability "urn:ietf:params:netconf:capability:candidate:1.0" within in the netconf hello message received. If not found, then automatically discard-changes operation should be is skipped.

2.- Also modification of YML file for the set of test affected so as to replace target and commit variables in that way:

target: running
commit: false

So that:

Test for those vendors like Infinera that don't support candidate datastore can be performed without any change in the testing process.

Accept Criteria:

Testing tool.