shared_lib: bump version of all .SO to 1.1

The original SOVERSION was not updated since its introduction,
two years ago.

This will serve as a cut-off point for any changes done before.
Going forward each SO will be versioned separately whenever
ABI breaking change occurs.

Version 1.1 will point to changes done up to
release of SPDK 20.01.
By SPDK 20.04 some of the libraries might update to 1.2.

Signed-off-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Change-Id: I9ef6c1d345a66b7683efa61e28edb5c2ba9b7c5a
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/1009


Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>