Description of problem:

- Support setting multiple maven repositories with MAVEN_MIRROR_URL for JWS/EAP S2I image

Version-Release number of selected component (if applicable):

- Current released version in xPaaS builder image

How reproducible:

- There are no way to set multiple maven repos.

Actual results:

- Currently only one repo can be set with $MAVEN_MIRROR_URL value.

Expected results:

- Set multiple values with $MAVEN_MIRROR_URL(S).

Additional info:

- scripts/s2i-common/common.sh supports only one repo.
---
# insert settings for mirrors/repository managers into settings.xml if supplied
function configure_mirrors() {
  if [ -n "$MAVEN_MIRROR_URL" ]; then
    xml="    <mirror>\
      <id>mirror.default</id>\
      <url>$MAVEN_MIRROR_URL</url>\
      <mirrorOf>external:*</mirrorOf>\
    </mirror>"
    sed -i "s|<!-- ### configured mirrors ### -->|$xml|" $HOME/.m2/settings.xml
  fi
}
---