When initializing k8s client in InfraDriverV2, the SSL CA
certificate is set incorrectly.
To fix the issue, the following modifies are made in this patch:
* A temp file for ssl_ca_cert is created before initializing
k8s client and the temp file path is set to k8s_config.ssl_ca_cert,
* The temp file is deleted until the lifetime of k8s client ends.
Note: This references the implementation in InfraDriverV1.
If set the ssl_ca_cert in instantiate request, the validation of
request is failed because of the length of ssl_ca_cert exceeds 1024.
For this issue, add a new type `keyvalue_pairs_no_length_limit`
which has no max length limitation to verify the request.
And the interfaceInfo, accessInfo, extra are all set to the new type
for unity.
In Zuul test environment, when registering default vim, ssl_ca_cert
is not set. So the case with ssl_ca_cert is not tested.
In this patch ssl_ca_cert is set into the default vim.
Closes-Bug: #1979413
Change-Id: I61dbd70690b737a72fc619e5a08b4bab51160a27
98d3f4bf31