My number one guess would be that you edited the files on a Windows machine, thus windows changed "\n" to "\r\n" which is not good.
You can try to fix it by SSH to the vagrant instance and doing:
# yum install dos2unix
# dos2unix /opt/kaltura/app/configurations/apache/conf.d/enabled.kaltura.conf
and then try to start Apache with:
# service httpd start
if that works, then that is the reason.