The plugin will use the following order of precedence:
environment value > file value > default value
See the wiki for details on environment variable names.
Signed-off-by: Avi Miller <avi.miller@oracle.com>
The individual parameters can still be overridden via the
corresponding OCI_CLI environment variable.
Signed-off-by: Avi Miller <avi.miller@oracle.com>
Also reduced the number of environment variables which simplifies
the documentation and requirements. The variable names now match
those used by the OCI CLI.
Signed-off-by: Avi Miller <avi.miller@oracle.com>