DATAJDBC-320 - Removed container-license-acceptance.txt.

This file accepted the license condition of Microsoft for there Docker image when running tests.
Very likely without the person using this knowing that she is accepting a license.
The file now has to be explicitly provided.

The Travis CI build adds the container-license-acceptance.txt for the build only.

.gitignore

@@ -8,3 +8,6 @@ target/
 .sonar4clipse
 *.sonar4clipseExternals
 *.graphml
+
+#prevent license accapting file to get accidentially commited to git
+container-license-acceptance.txt

.travis.yml

@@ -27,5 +27,6 @@ services:
 install: true
 
 script:
+  - "echo 'microsoft/mssql-server-linux:2017-CU6' > spring-data-jdbc/src/test/resources/container-license-acceptance.txt"
   - "mvn -version"
   - "mvn clean dependency:list test -Pall-dbs${NO_JACOCO:+',no-jacoco'} -Dsort -U"

spring-data-jdbc/README.adoc

@@ -62,6 +62,14 @@ Currently the following _databasetypes_ are available:
 * mysql
 * postgres
 * mariadb
+* mssql
+
+Testing with Microsoft SQL Server requires you to accept the EULA of the Microsoft SQL Server Docker image, so the build may download and run it for you.
+In order to accept the EULA please add a file named `container-license-acceptance.txt` to the classpath, i.e. `src/test/resources` with the content:
+
+```
+microsoft/mssql-server-linux:2017-CU6
+```
 
 === Run tests with all databases
 

spring-data-jdbc/src/test/resources/container-license-acceptance.txt

@@ -1 +0,0 @@
-microsoft/mssql-server-linux:2017-CU6