Merge pull request #1358 from GolosChain/shift-hf21-time

Set HF21 time to 12 aug 2017 12:00:00 MSK

Author: afalaleev

libraries/chain/hardfork.d/0_21.hf

@@ -7,7 +7,7 @@
 #ifdef STEEMIT_BUILD_TESTNET
 #define STEEMIT_HARDFORK_0_21_TIME  1563613200 // 20 jul 2019 12:00:00 MSK
 #else
-#define STEEMIT_HARDFORK_0_21_TIME  1565254800 // 08 aug 2019 12:00:00 MSK
+#define STEEMIT_HARDFORK_0_21_TIME  1565600400 // 12 aug 2019 12:00:00 MSK
 #endif
 
 #define STEEMIT_HARDFORK_0_21_VERSION hardfork_version( 0, 21 )