[CI] Test maven plugin in Travis, move jobs from Shippable to Circle CI (#3087)

* test plugin in travis, move jobs to circle CI

* Revert "[maven-plugin] fix strictSpec parameter (#3071)"

This reverts commit 8c9a1512ae824d35866375eb69ddd085309d0251.

* Revert "Revert "[maven-plugin] fix strictSpec parameter (#3071)""

This reverts commit c3e5723c5a365ffb8a6cedfcc4a7a278543e63a3.

* test with jdk8

.travis.yml

@@ -131,6 +131,9 @@ script:
   # WARN: Travis will timeout after 10 minutes of no stdout/stderr activity, which is problematic with mvn --quiet.
   - mvn --quiet --batch-mode --show-version clean install
   - mvn --quiet --batch-mode --show-version verify -Psamples
+  # test maven plugin
+  - mvn clean compile -f modules/openapi-generator-maven-plugin/examples/java-client.xml
+  - mvn clean compile -f modules/openapi-generator-maven-plugin/examples/multi-module/pom.xml
 after_success:
   # push to maven repo
   - if [ $SONATYPE_USERNAME ] && [ "$TRAVIS_PULL_REQUEST" == "false" ]; then

CI/circle_parallel.sh

@@ -12,6 +12,15 @@ if [ "$NODE_INDEX" = "1" ]; then
   #cp CI/pom.xml.circleci pom.xml
   java -version
   mvn --quiet verify -Psamples.circleci
+
+  # generate all petstore samples (client, servers, doc)
+  ./bin/run-all-petstore
+  # generate all petstore samples (openapi3)
+  ./bin/openapi3/run-all-petstore
+  # generate test scripts
+  ./bin/tests/run-all-test
+  # test all generators with fake petstore spec (2.0, 3.0)
+  ./bin/utils/test-fake-petstore-for-all.sh
 elif [ "$NODE_INDEX" = "2" ]; then
   # run ensure-up-to-date sample script on SNAPSHOT version only
   project_version=`mvn org.apache.maven.plugins:maven-help-plugin:3.1.0:evaluate -Dexpression=project.version -q -DforceStdout`

shippable.yml

@@ -38,11 +38,12 @@ build:
     - mix --version
     # test samples defined in pom.xml
     - mvn --quiet verify -P samples.shippable -Dmaven.javadoc.skip=true
-    # generate all petstore samples (client, servers, doc)
-    - ./bin/run-all-petstore
-    # generate all petstore samples (openapi3)
-    - ./bin/openapi3/run-all-petstore
-    # generate test scripts
-    - ./bin/tests/run-all-test
-    # test all generators with fake petstore spec (2.0, 3.0)
-    - ./bin/utils/test-fake-petstore-for-all.sh
+    # below moved to CircleCI
+    ## generate all petstore samples (client, servers, doc)
+    #- ./bin/run-all-petstore
+    ## generate all petstore samples (openapi3)
+    #- ./bin/openapi3/run-all-petstore
+    ## generate test scripts
+    #- ./bin/tests/run-all-test
+    ## test all generators with fake petstore spec (2.0, 3.0)
+    #- ./bin/utils/test-fake-petstore-for-all.sh