Don't reset key sequence when setting the same master key (#468)
Don't reset key sequence when setting the same master key (#468)

Update 'SetMasterKey()' to reset key sequence only when setting a different master key.
jwhui/openthread,xiaom-GitHub/openthread,jjlee3/openthread,pvanhorn/openthread,vaas-krish/openthread,lanyuwen/openthread,Zolertia/openthread,gandreello/openthread,vaas-krish/openthread,LeZhang2016/openthread,GiedriusM/openthread,pvanhorn/openthread,mszczodrak/openthread,erja-gp/openthread,fbsder/openthread,openthread/openthread,abtink/openthread,lanyuwen/openthread,abtink/openthread,turon/openthread,pvanhorn/openthread,srickardti/openthread,aeliot/openthread,librasungirl/openthread,GiedriusM/openthread,LeZhang2016/openthread,JakubBrachTieto/openthread,lanyuwen/openthread,turon/openthread,pvanhorn/openthread,jjlee9/openthread,erja-gp/openthread,abtink/openthread,Zolertia/openthread,aeliot/openthread,xiaom-GitHub/openthread,lanyuwen/openthread,gandreello/openthread,bukepo/openthread,fbsder/openthread,Zolertia/openthread,lanyuwen/openthread,mszczodrak/openthread,srickardti/openthread,nibanks/openthread,georgecpr/openthread,bukepo/openthread,GiedriusM/openthread,openthread/openthread,jjlee3/openthread,aeliot/openthread,gandreello/openthread,jwhui/openthread,vaas-krish/openthread,gandreello/openthread,turon/openthread,vaas-krish/openthread,pvanhorn/openthread,LeZhang2016/openthread,erja-gp/openthread,chshu/openthread,mszczodrak/openthread,georgecpr/openthread,fbsder/openthread,GiedriusM/openthread,Zolertia/openthread,mszczodrak/openthread,mszczodrak/openthread,chshu/openthread,openthread/openthread,LeZhang2016/openthread,xiaom-GitHub/openthread,nibanks/openthread,lanyuwen/openthread,aeliot/openthread,jjlee3/openthread,chshu/openthread,GiedriusM/openthread,librasungirl/openthread,jjlee9/openthread,vaas-krish/openthread,pvanhorn/openthread,JakubBrachTieto/openthread,georgecpr/openthread,georgecpr/openthread,georgecpr/openthread,bukepo/openthread,erja-gp/openthread,JakubBrachTieto/openthread,LeZhang2016/openthread,mszczodrak/openthread,turon/openthread,nibanks/openthread,fbsder/openthread,LeZhang2016/openthread,jjlee9/openthread,jjlee3/openthread,xiaom-GitHub/openthread,gandreello/openthread,JakubBrachTieto/openthread,srickardti/openthread,abtink/openthread,jjlee3/openthread,srickardti/openthread,fbsder/openthread,georgecpr/openthread,chshu/openthread,erja-gp/openthread,jjlee9/openthread,JakubBrachTieto/openthread,aeliot/openthread,aeliot/openthread,fbsder/openthread,jjlee9/openthread,openthread/openthread,jwhui/openthread,gandreello/openthread,Zolertia/openthread,bukepo/openthread,jjlee9/openthread,JakubBrachTieto/openthread,vaas-krish/openthread,librasungirl/openthread,jwhui/openthread,xiaom-GitHub/openthread,erja-gp/openthread,nibanks/openthread,nibanks/openthread,chshu/openthread,librasungirl/openthread,xiaom-GitHub/openthread,nibanks/openthread,chshu/openthread