Lock app dynamics to php 5.6.X
Lock app dynamics to php 5.6.X

[#144939015]

Signed-off-by: Danny Joyce <656eadb1608d5e3ea5db131e513d97abdf96b075@pivotal.io>

cf-identity/php-buildpack,cloudfoundry/php-buildpack,cloudfoundry/php-buildpack,cf-identity/php-buildpack,cloudfoundry/php-buildpack,cf-identity/php-buildpack,cf-identity/php-buildpack,cloudfoundry/php-buildpack,cf-identity/php-buildpack,cloudfoundry/php-buildpack,cf-identity/php-buildpack,cloudfoundry/php-buildpack,cf-identity/php-buildpack,cloudfoundry/php-buildpack