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ARROW-6957: [CI][Crossbow] Nightly R with sanitizers build fails installing dependencies

Closes #5986 from nealrichardson/fix-r-sanitizer and squashes the following commits:

56b6cffad <Neal Richardson> Install R package
8423eba0b <Neal Richardson> Rectify docker-compose command
965148e52 <Neal Richardson> Attempt to fix nightly R sanitizer job

Authored-by: Neal Richardson <neal.p.richardson@gmail.com>
Signed-off-by: Neal Richardson <neal.p.richardson@gmail.com>