CLI - improve error message format

[mreynolds389]

Issue Description

When a generic exception is logged it contains lots of information, and is not really human readable or friendly:

# dsconf slapd-localhost logging access set max-logs 3245345345345345sdfsdfsf
Error: 103 - 3 - 53 - Server is unwilling to perform - [] - Invalid value "3245345345345345sdfsdfsf" for attribute (nsslapd-accesslog-maxlogsperdir), value must be between 1 and 2147483647 - modify_ext_s(('cn=config', [(2, 'nsslapd-accesslog-maxlogsperdir', [b'3245345345345345sdfsdfsf'])]),{'serverctrls': None, 'clientctrls': None, 'escapehatch': 'i am sure'}) on instance localhost

For non-json/non-verbose operations it would be nice to just provide the minimum necessary information

# dsconf slapd-localhost logging access set max-logs 3245345345345345sdfsdfsf
Error:  Server is unwilling to perform(53) - Invalid value "3245345345345345sdfsdfsf" for attribute (nsslapd-accesslog-maxlogsperdir), value must be between 1 and 2147483647