updated android gradle plugin
updated android gradle plugin

emnrd-ito/arcgis-runtime-samples-android,Esri/arcgis-runtime-samples-android,lituanzhang/arcgis-runtime-samples-android,ActiveFeng/arcgis-runtime-samples-android,rcherbon/arcgis-runtime-samples-android,kalathilsunil/arcgis-runtime-samples-android,Sirya/arcgis-runtime-samples-android,mcnerthney/arcgis-runtime-samples-android,fkaye/arcgis-runtime-samples-android,cyohman/arcgis-runtime-samples-android,walnuthe/arcgis-runtime-samples-android,siddharthapriya/arcgis-runtime-samples-android,MuhammadAmmad/arcgis-runtime-samples-android,dimcal7/arcgis-runtime-samples-android,ibrucekong/arcgis-runtime-samples-android,wwmmyy/arcgis-runtime-samples-android,lemib/arcgis-runtime-samples-android,nhaney90/arcgis-runtime-samples-android,Esri/arcgis-runtime-samples-android,fallsdownhill/arcgis-runtime-samples-android,Esri/arcgis-runtime-samples-android,Esri/arcgis-runtime-samples-android,nohe427/arcgis-runtime-samples-android,n8ebel/arcgis-runtime-samples-android,laogongstg/arcgis-runtime-samples-android,snodnipper/arcgis-runtime-samples-android,adnanshoukat/arcgis-runtime-samples-android,Rahul-kAgrawal/https-github.com-Esri-arcgis-runtime-samples-android