util: enable golang profiling

Add support for golang profiling.
Standard tools like go tool pprof and curl
work. example:
$ go tool pprof http://localhost:8080/debug/pprof/profile
$ go tool pprof http://localhost:8080/debug/pprof/heap
$ curl http://localhost:8080/debug/pprof/heap?debug=1

https://golang.org/pkg/net/http/pprof/ contains
more details about the pprof interface.

Fixes: #1699

Signed-off-by: Yati Padia <ypadia@redhat.com>

deploy/cephfs/kubernetes/csi-cephfsplugin-provisioner.yaml

@@ -120,6 +120,7 @@ spec:
             - "--v=5"
             - "--drivername=cephfs.csi.ceph.com"
             - "--pidlimit=-1"
+            - "--enableprofiling=false"
           env:
             - name: POD_IP
               valueFrom:

deploy/cephfs/kubernetes/csi-cephfsplugin.yaml

@@ -55,6 +55,7 @@ spec:
             - "--endpoint=$(CSI_ENDPOINT)"
             - "--v=5"
             - "--drivername=cephfs.csi.ceph.com"
+            - "--enableprofiling=false"
             # If topology based provisioning is desired, configure required
             # node labels representing the nodes topology domain
             # and pass the label names below, for CSI to consume and advertise