Release 2.17.08.0

Features

• Cluster refine #119
• Start without writehost ,used for manager agent.#220
• Disable cache if need #222
• Support replace into statement #233
• Add reload metadata #237
• Support mysql partition table #238
• Remove migrate #239

Bug-fixes :

• Manager bugs
  see details #199, #200, #202, #204 , #205, #206, #209, #211, #213, #216, #217, #225, #232, #235 #236, #237.
• Complex query
  Some function is not correct.#219,
• Global sequence
  Global sequence of type 4 may lost a batch of numbers. #221
• NPE bugs
  see details #240,#243,#244
• Global table bugs
  'Or' filter cause wrong result.#248
  Insert ignore statement is not correct.#250