Replace aws command line with OCF_RESKEY_awscli property. (#1483)
- Replace aws command line with OCF_RESKEY_awscli property.
- - Replace aws command line with OCF_RESKEY_awscli property.
- Add OCF_RESKEY_awscli and OCF_RESKEY_profile default variables.
- Add awscli (Path to AWS CLI tools) parameter.
- Remove required attribute on profile parameter.
- Replace --profile $OCF_RESKEY_profile with AWS_PROFILE_OPT.