Description of problem:
Identified issue with vsphere regarding VMName resulting in panic stating "runtime error: invalid memory address or nil pointer dereference."  See below log entry from customer.
Issue resolved in Kubernetes here: https://github.com/kubernetes/kubernetes/pull/44661/files
Fix implemented in OpenShift 3.7, need to see if possible to implement in 3.6

-- Unit atomic-openshift-master-controllers.service has begun starting up.
Apr 11 12:24:14 customer-test-example atomic-openshift-master-controllers[89894]: W0411 12:24:14.139605   89894 start_master.go:297] Warning: auditConfig.auditFilePath: Required value: audit can not be logged to a separate file, master start will continue.
Apr 11 12:24:14 customer-test-example atomic-openshift-master-controllers[89894]: I0411 12:24:14.148686   89894 start_master.go:441] Starting controllers on 0.0.0.0:8444 (v3.6.173.0.96)
Apr 11 12:24:14 customer-test-example atomic-openshift-master-controllers[89894]: I0411 12:24:14.148720   89894 start_master.go:445] Using images from "openshift3/ose-<component>:v3.6.173.0.96"
Apr 11 12:24:14 customer-test-example atomic-openshift-master-controllers[89894]: I0411 12:24:14.150457   89894 master.go:323] Started health checks at 0.0.0.0:8444
Apr 11 12:24:14 customer-test-example atomic-openshift-master-controllers[89894]: W0411 12:24:14.150746   89894 vsphere.go:281] port is a deprecated field in vsphere.conf and will be removed in future release.
Apr 11 12:24:14 customer-test-example atomic-openshift-master-controllers[89894]: panic: runtime error: invalid memory address or nil pointer dereference
Apr 11 12:24:14 customer-test-example atomic-openshift-master-controllers[89894]: [signal SIGSEGV: segmentation violation code=0x1 addr=0x20 pc=0x2280fe7]
Apr 11 12:24:14 customer-test-example atomic-openshift-master-controllers[89894]: goroutine 1 [running]:
Apr 11 12:24:14 customer-test-example atomic-openshift-master-controllers[89894]: panic(0x48a0ea0, 0xc42000e040)
Apr 11 12:24:14 customer-test-example atomic-openshift-master-controllers[89894]: /usr/lib/golang/src/runtime/panic.go:500 +0x1a1 fp=0xc42168a2b0 sp=0xc42168a220
Apr 11 12:24:14 customer-test-example atomic-openshift-master-controllers[89894]: runtime.panicmem()
Apr 11 12:24:14 customer-test-example atomic-openshift-master-controllers[89894]: /usr/lib/golang/src/runtime/panic.go:62 +0x6d fp=0xc42168a2e0 sp=0xc42168a2b0
Apr 11 12:24:14 customer-test-example atomic-openshift-master-controllers[89894]: runtime.sigpanic()
Apr 11 12:24:14 customer-test-example atomic-openshift-master-controllers[89894]: /usr/lib/golang/src/runtime/sigpanic_unix.go:24 +0x214 fp=0xc42168a338 sp=0xc42168a2e0
Apr 11 12:24:14 customer-test-example atomic-openshift-master-controllers[89894]: github.com/openshift/origin/vendor/k8s.io/kubernetes/pkg/cloudprovider/providers/vsphere.getVMName(0xc420487090, 0xc4206c48f0, 0x0, 0x0, 0x0, 0x0)

Additional info:
https://github.com/kubernetes/kubernetes/pull/44661/files