When there are errors with namecheap hosts, acme.sh fails with:
dns_namecheap.sh: line 262: _error: command not found
Based on usage elsewhere in the file, I believe this should be _err
The change made in #4057 broke the decoding of OCI_CLI_KEY from
the encoded OCI_CLI_KEY_FILE content so this removes the multiline
parameter to fix it.
Signed-off-by: Avi Miller <avi.miller@oracle.com>