Try to improve the stability of the build on Travis

- Bump Travis wait time to 45 minutes
- Use fast profile for first build

.travis.yml

@@ -7,5 +7,5 @@ services:
   - cassandra
 sudo: false
 install: true
-before_script: travis_wait 30 ./mvnw install -q -U -DskipTests=true -Dmaven.test.redirectTestOutputToFile=true
+before_script: travis_wait 45 ./mvnw install -q -U -DskipTests=true -Pfast -Dmaven.test.redirectTestOutputToFile=true
 script: ./mvnw install -q -nsu -Dmaven.test.redirectTestOutputToFile=true -P '!integration'
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