travis: check quarantine configuration in some builds

.travis.yml

@@ -134,7 +134,7 @@ matrix:
             - autoconf
             - autopoint
             - tcl8.5-dev
-    - env: CONFIGURE_OPTS='--with-tclsh=tclsh8.6 --prefix=/tmp/modules --enable-compat-version --with-loadedmodules=null:dot'
+    - env: CONFIGURE_OPTS='--with-tclsh=tclsh8.6 --prefix=/tmp/modules --enable-compat-version --with-loadedmodules=null:dot --with-quarantine-vars="LD_LIBRARY_PATH FOO=VAL BAR=VAL2"'
       addons:
         apt:
           sources:
@@ -178,15 +178,15 @@ matrix:
     # also enable a display on this test case to validate x-resource behavior
     - env: OS_NAME=centos OS_VERSION=6 DOCKER_IMAGE=${OS_NAME}:${OS_NAME}${OS_VERSION} CONTAINER=${OS_NAME}${OS_VERSION}
            CMD_PREFIX="docker exec --env RUNTESTFLAGS=-v $CONTAINER xvfb-run"
-           CONFIGURE_OPTS='--prefix=/tmp/modules --enable-compat-version --with-loadedmodules=null:dot'
+           CONFIGURE_OPTS='--prefix=/tmp/modules --enable-compat-version --with-loadedmodules=null:dot --with-quarantine-vars=LD_LIBRARY_PATH'
            EXTRA_PKGS='xorg-x11-server-utils xorg-x11-server-Xvfb automake autoconf gettext-devel gcc tcl-devel'
       sudo: required
       services:
         - docker
 
     - env: OS_NAME=centos OS_VERSION=7 DOCKER_IMAGE=${OS_NAME}:${OS_NAME}${OS_VERSION} CONTAINER=${OS_NAME}${OS_VERSION}
            CMD_PREFIX="docker exec --env RUNTESTFLAGS=-v $CONTAINER xvfb-run"
-           CONFIGURE_OPTS='--prefix=/tmp/modules --enable-compat-version --with-loadedmodules=null:dot'
+           CONFIGURE_OPTS='--prefix=/tmp/modules --enable-compat-version --with-loadedmodules=null:dot --with-quarantine-vars=LD_LIBRARY_PATH'
            EXTRA_PKGS='which xorg-x11-server-utils xorg-x11-server-Xvfb automake autoconf gettext-devel gcc tcl-devel'
       sudo: required
       services:
@@ -203,7 +203,7 @@ matrix:
     # also enable a display on this test case to validate x-resource behavior
     - env: OS_NAME=opensuse OS_VERSION=leap DOCKER_IMAGE=${OS_NAME}:${OS_VERSION} CONTAINER=${OS_VERSION}
            CMD_PREFIX="docker exec --env RUNTESTFLAGS=-v $CONTAINER xvfb-run"
-           CONFIGURE_OPTS='--prefix=/tmp/modules --enable-compat-version --with-loadedmodules=null:dot'
+           CONFIGURE_OPTS='--prefix=/tmp/modules --enable-compat-version --with-loadedmodules=null:dot --with-quarantine-vars=LD_LIBRARY_PATH'
            EXTRA_PKGS='which xrdb xvfb-run autoconf automake gettext-tools-mini gcc tcl-devel'
       sudo: required
       services: