Description of problem:

Warm migrate 1 VM from vSphere 7 to cnv, vCenter sessions keep on increasing from 11 to 1150

Version-Release number of selected component (if applicable):

MTV 2.7.8, CNV 4.17.3

How reproducible:

100 %

Steps to Reproduce:

1) Create vsphere7 provider and create a warm migration plan to migrate 1 vm from vsphere7 to cnv, before the migration, check the vcenter sessions number: 11

2) During the migration plan execution( during the DiskTransfer phase, waiting for the cutover, after the cutover), the sessions keep on increasing from 11 to 1150, more details in file: session.log

3) When the plan failed or succeeded, the sessions decrease to 5

Actual result:

In step2: During the migration plan execution, the sessions keep on increasing to 1150

Expected result:

In step2: During the migration plan execution, don't create too many sessions