Add API specific for a consumer and provide the ability to get cached data

[travula]

The data contained for each lab in the http response is huge but each consumer might not need all this information. Therefore, API is provided map the lab data for a consumer.

Also, for every get request, we might go the database, most of the cached information is sufficient.

[travula]

Commit ID resolves this issue

[travula]

@madhavipuliraju @ksripathi

Can you please host it on base4 and test a little and deploy it in production ?

[madhavipuliraju]

Tested on base4
URL: http://lds-consumer.base4.vlabs.ac.in/labs?cached=1

[madhavipuliraju]

Tested on base1
URL: http://lds-consumer.base1.vlabs.ac.in/labs?cached=1&consumer=lp

[madhavipuliraju]

Tested on Production
URL: http://lds.vlabs.ac.in/labs?cached=1&consumer=lp