configuration value gets truncated when over 128 char

[Satoshi MITANI]

currently, configuration_value column size is 128 char.
so configuration values over 128 char gets truncated.

Note that, MySQL 5.7.8 later default sql-mode takes over 128 char value like below.
ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
https://dev.mysql.com/doc/refman/5.7/en/server-options.html#option_mysqld_sql-mode

-bash-4.2$ trove configuration-create limit_128_test ' { "sql_mode": "\"ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION\"" } ' --datastore pxc --datastore_version pxc56

+------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------+
| Property | Value |
+------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------+
| created | 2017-03-10T05:35:31 |
| datastore_name | pxc |
| datastore_version_id | a83258f6-b3f8-4e8a-a009-a680ed2f0bad |
| datastore_version_name | pxc56 |
| description | None |
| id | 5c59bf82-cc7c-47de-a966-44941c2681e2 |
| instance_count | 0 |
| name | limit_128_test |
| updated | 2017-03-10T05:35:31 |
| values | {u'sql_mode': u'"ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SU'} |
+------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------+

-bash-4.2$ trove configuration-show 5c59bf82-cc7c-47de-a966-44941c2681e2
+------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------+
| Property | Value |
+------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------+
| created | 2017-03-10T05:35:31 |
| datastore_name | pxc |
| datastore_version_name | pxc56 |
| description | None |
| id | 5c59bf82-cc7c-47de-a966-44941c2681e2 |
| instance_count | 0 |
| name | limit_128_test |
| updated | 2017-03-10T05:35:31 |
| values | {"sql_mode": "\"ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SU"} |
+------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------+

[ccyu (indicoliteplus)]

review at: https://review.openstack.org/#/c/445768/

>>> sql_mode="ALLOW_INVALID_DATES,ANSI_QUOTES,ERROR_FOR_DIVISION_BY_ZERO,HIGH_NOT_PRECEDENCE,IGNORE_SPACE,NO_AUTO_CREATE_USER,NO_AUTO_VALUE_ON_ZERO,NO_BACKSLASH_ESCAPES,NO_DIR_IN_CREATE,NO_ENGINE_SUBSTITUTION,NO_FIELD_OPTIONS,NO_KEY_OPTIONS,NO_TABLE_OPTIONS,NO_UNSIGNED_SUBTRACTION,NO_ZERO_DATE,NO_ZERO_IN_DATE,ONLY_FULL_GROUP_BY,PAD_CHAR_TO_FULL_LENGTH,PIPES_AS_CONCAT,REAL_AS_FLOAT,STRICT_ALL_TABLES,STRICT_TRANS_TABLES"
>>> len(sql_mode)
407

So I changed the Table configuration column value:
from String(128) to String(512).

[ccyu (indicoliteplus)]

review at: https://review.openstack.org/#/c/445780/