Common: add AWS staging credentials to .travis.yml (close #3114)
Common: add AWS staging credentials to .travis.yml (close #3114)

Propertyfinder/snowplow,RetentionGrid/snowplow,aldemirenes/snowplow,sspinc/snowplow,Propertyfinder/snowplow,acgray/snowplow,liveintent-berlin/snowplow,aldemirenes/snowplow,sspinc/snowplow,haensel-ams/snowplow,RetentionGrid/snowplow,haensel-ams/snowplow,liveintent-berlin/snowplow,sspinc/snowplow,Propertyfinder/snowplow,acgray/snowplow,aldemirenes/snowplow,sspinc/snowplow,RetentionGrid/snowplow,acgray/snowplow,Propertyfinder/snowplow,liveintent-berlin/snowplow,RetentionGrid/snowplow,snowplow/snowplow,haensel-ams/snowplow,sspinc/snowplow,haensel-ams/snowplow,liveintent-berlin/snowplow,aldemirenes/snowplow,Propertyfinder/snowplow,liveintent-berlin/snowplow,sspinc/snowplow,aldemirenes/snowplow,haensel-ams/snowplow,snowplow/snowplow,acgray/snowplow,Propertyfinder/snowplow,snowplow/snowplow,liveintent-berlin/snowplow,RetentionGrid/snowplow,aldemirenes/snowplow,acgray/snowplow,acgray/snowplow,snowplow/snowplow,haensel-ams/snowplow