Adding Query Parameter for listing snapshots for dellctl support

[harshitap26]

PR Submission checklist

GitHub Issues

List the GitHub issues impacted by this PR:

GitHub Issue #
dell/csm#1281

Common PR Checklist:

• Have you made sure that the code compiles?
• Have you commented your code, particularly in hard-to-understand areas
• Did you run tests in a real Kubernetes cluster?
• Have you maintained backward compatibility

Description of your changes:

• While extending the support of dellctl to list the Powerscale Snapshots, we observed that GetIsiSnapshots function is not returning all the snapshots on the cluster.
• There is a query parameter resume that we need to pass to continue listing all the results - https://developer.dell.com/apis/4088/versions/9.4.0.0/9.4.0.0.json/paths/~1platform~11~1snapshot~1snapshots/get so the PR contains the changes to add the query parameter and continue calling the API to get the snapshots from the cluster till the value of resume is empty.

Used these changes on cam-authorization and able to list the snapshots created and get the snapshot count as well

[root@master-1-DISXduyHx8XGU bin]# ./dellctl volume ls --insecure --namespace isilon --proxy https://csm-authorization.com:30495/
NAME                           VOLUME ID   SIZE       POOL            SYSTEM ID                   PV NAME                        PV STATUS   STORAGE CLASS   PVC NAME      NAMESPACE   SNAPSHOT COUNT
k8s-csmtn1-sample-5e5557d921   478376      0.000000   /ifs/data/csi   PIE-IsilonS-24241-Cluster   k8s-csmtn1-sample-5e5557d921   Bound       isilon          pvol-isilon   default     2

[root@master-1-DISXduyHx8XGU bin]# ./dellctl snapshot ls --insecure --namespace isilon --proxy https://csm-authorization.com:30495/
NAME                                            SNAPSHOT ID   SIZE       POOL            SYSTEM ID                   ACCESS MODE   SOURCE VOLUME ID
snapshot-7d79bb9c-29e4-4796-b26e-47a6a31910fb   368472        0.000006   /ifs/data/csi   PIE-IsilonS-24241-Cluster                 478376
snapshot-afd0a9c4-156c-4b53-b828-52bba312cb20   368474        0.000006   /ifs/data/csi   PIE-IsilonS-24241-Cluster                 478376

[shefali-malhotra]

LGTM