ARROW-2637: [C++/Python] Build support and instructions for development on Alpine Linux
ARROW-2637: [C++/Python] Build support and instructions for development on Alpine Linux

Build support is tested by `docker-compose run cpp-alpine`

Author: Krisztián Szűcs <szucs.krisztian@gmail.com>

Closes #3191 from kszucs/ARROW-2637 and squashes the following commits:

ea43e08ee <Krisztián Szűcs>  add bash to run the tests
348e982a0 <Krisztián Szűcs>  add README instructions to build arrow on alpine linux

icexelloss/arrow,renesugar/arrow,cpcloud/arrow,cpcloud/arrow,kou/arrow,cpcloud/arrow,icexelloss/arrow,apache/arrow,laurentgo/arrow,kou/arrow,renesugar/arrow,xhochy/arrow,tebeka/arrow,laurentgo/arrow,apache/arrow,cpcloud/arrow,laurentgo/arrow,icexelloss/arrow,renesugar/arrow,pcmoritz/arrow,renesugar/arrow,majetideepak/arrow,itaiin/arrow,wesm/arrow,majetideepak/arrow,itaiin/arrow,kou/arrow,renesugar/arrow,apache/arrow,tebeka/arrow,itaiin/arrow,cpcloud/arrow,itaiin/arrow,cpcloud/arrow,apache/arrow,laurentgo/arrow,itaiin/arrow,laurentgo/arrow,laurentgo/arrow,kou/arrow,apache/arrow,apache/arrow,majetideepak/arrow,icexelloss/arrow,renesugar/arrow,renesugar/arrow,laurentgo/arrow,kou/arrow,xhochy/arrow,xhochy/arrow,renesugar/arrow,xhochy/arrow,laurentgo/arrow,majetideepak/arrow,renesugar/arrow,laurentgo/arrow,majetideepak/arrow,wesm/arrow,apache/arrow,pcmoritz/arrow,tebeka/arrow,renesugar/arrow,icexelloss/arrow,xhochy/arrow,xhochy/arrow,pcmoritz/arrow,wesm/arrow,itaiin/arrow,kou/arrow,wesm/arrow,icexelloss/arrow,laurentgo/arrow,pcmoritz/arrow,itaiin/arrow,laurentgo/arrow,laurentgo/arrow,xhochy/arrow,pcmoritz/arrow,cpcloud/arrow,apache/arrow,itaiin/arrow,laurentgo/arrow,renesugar/arrow,xhochy/arrow,itaiin/arrow,itaiin/arrow,tebeka/arrow,wesm/arrow,laurentgo/arrow,cpcloud/arrow,xhochy/arrow,cpcloud/arrow,wesm/arrow,renesugar/arrow,pcmoritz/arrow,majetideepak/arrow,icexelloss/arrow,laurentgo/arrow,renesugar/arrow,kou/arrow,kou/arrow,wesm/arrow,xhochy/arrow,wesm/arrow,itaiin/arrow,pcmoritz/arrow,icexelloss/arrow,majetideepak/arrow,majetideepak/arrow,majetideepak/arrow,kou/arrow,itaiin/arrow,cpcloud/arrow,cpcloud/arrow,kou/arrow,majetideepak/arrow,xhochy/arrow,pcmoritz/arrow,apache/arrow,cpcloud/arrow,pcmoritz/arrow,majetideepak/arrow,pcmoritz/arrow,icexelloss/arrow,tebeka/arrow,icexelloss/arrow,kou/arrow,apache/arrow,wesm/arrow,tebeka/arrow,itaiin/arrow,icexelloss/arrow,pcmoritz/arrow,cpcloud/arrow,wesm/arrow,pcmoritz/arrow,majetideepak/arrow,kou/arrow,majetideepak/arrow,apache/arrow,icexelloss/arrow,cpcloud/arrow,renesugar/arrow,wesm/arrow,tebeka/arrow,tebeka/arrow,kou/arrow,wesm/arrow,apache/arrow,icexelloss/arrow,itaiin/arrow,xhochy/arrow,majetideepak/arrow,icexelloss/arrow,pcmoritz/arrow,tebeka/arrow,xhochy/arrow,apache/arrow,wesm/arrow,pcmoritz/arrow,kou/arrow,tebeka/arrow,xhochy/arrow,pcmoritz/arrow,majetideepak/arrow,xhochy/arrow,wesm/arrow,renesugar/arrow,itaiin/arrow,apache/arrow