travis ci pecl only php 7, edit install lines

Author: jeffreyzant

.travis.yml

@@ -129,11 +129,11 @@ before_install:
 install: travis_retry composer install --prefer-dist --no-interaction --no-suggest
 
 before_script:
-  - if [[ ${TRAVIS_PHP_VERSION:0:3} == "7.0" ]]; then printf "yes\n" | pecl install redis; fi
-  - if [[ ${TRAVIS_PHP_VERSION:0:3} == "7.1" ]]; then printf "yes\n" | pecl install redis; fi
-  - if [[ ${TRAVIS_PHP_VERSION:0:3} == "7.2" ]]; then printf "yes\n" | pecl install redis; fi
-  - if [[ ${TRAVIS_PHP_VERSION:0:3} == "7.3" ]]; then printf "yes\n" | pecl install redis; fi
-  - if [[ ${TRAVIS_PHP_VERSION:0:3} == "7.4" ]]; then printf "yes\n" | pecl install redis; fi
+  - if [[ ${TRAVIS_PHP_VERSION:0:3} == "7.0" ]]; then pecl install -f redis; fi
+  - if [[ ${TRAVIS_PHP_VERSION:0:3} == "7.1" ]]; then pecl install -f redis; fi
+  - if [[ ${TRAVIS_PHP_VERSION:0:3} == "7.2" ]]; then pecl install -f redis; fi
+  - if [[ ${TRAVIS_PHP_VERSION:0:3} == "7.3" ]]; then pecl install -f redis; fi
+  - if [[ ${TRAVIS_PHP_VERSION:0:3} == "7.4" ]]; then pecl install -f redis; fi
   - if [[ ${TRAVIS_PHP_VERSION:0:3} == "7.0" ]]; then echo "extension=redis.so" >> `php --ini | grep "Loaded Configuration" | sed -e "s|.*:\s*||"; fi`
   - if [[ ${TRAVIS_PHP_VERSION:0:3} == "7.1" ]]; then echo "extension=redis.so" >> `php --ini | grep "Loaded Configuration" | sed -e "s|.*:\s*||"; fi`
   - if [[ ${TRAVIS_PHP_VERSION:0:3} == "7.2" ]]; then echo "extension=redis.so" >> `php --ini | grep "Loaded Configuration" | sed -e "s|.*:\s*||"; fi`