Update travis configuration
Update travis configuration

Follow OCA/maintainer-quality-tools#187 and use addons/apt/package directive to
install our build dependencies. This allows using container based Travis builds
(which should be faster).

acsone/bank-statement-import,lbelorgey/bank-statement-import,open-synergy/bank-statement-import,NL66278/bank-statement-import,Antiun/bank-statement-import,Endika/bank-statement-import,hbrunn/bank-statement-import,VitalPet/bank-statement-import,rschnapka/bank-statement-import,StefanRijnhart/bank-statement-import