Update policy for instance-family (#420)

Previous version mentioned the policy is 'to read instance-family', This lets you list but not attach volumes. The 'use instance-family' is needed, according to: https://docs.oracle.com/en-us/iaas/Content/Identity/Concepts/commonpolicies.htm#volume-admins-manage-volumes-and-backups

Author: adinan-tech

docs/src/gs/install-csi.md

@@ -13,7 +13,7 @@ Oracle recommends using [Instance principals][instance-principals] to be used by
 following policies in the dynamic group for CSI to be able to talk to various OCI Services.
 
 ```
-allow dynamic-group [your dynamic group name] to read instance-family in compartment [your compartment name]
+allow dynamic-group [your dynamic group name] to use instance-family in compartment [your compartment name]
 allow dynamic-group [your dynamic group name] to use virtual-network-family in compartment [your compartment name]
 allow dynamic-group [your dynamic group name] to manage volume-family in compartment [your compartment name]
 ```
@@ -100,4 +100,4 @@ Follow the guides below to create PVCs based on the service you require:
 
 
 [oci-ccm-release-page]: https://github.com/oracle/oci-cloud-controller-manager/releases
-[instance-principals]: https://docs.oracle.com/en-us/iaas/Content/Identity/Tasks/callingservicesfrominstances.htm
+[instance-principals]: https://docs.oracle.com/en-us/iaas/Content/Identity/Tasks/callingservicesfrominstances.htm