LU-12269 build: remove %{fullrelease} from Provides

LU-12269 build: remove %{fullrelease} from Provides

Commit 7532409 adds a version number to lustre-osd-mount
Provides lines in lustre.spec.in, but include the
%{fullrelease} macro that was previously removed by
28c17d4. This causes an "unexpanded macro" warning when
building the RPM, and the result contains a bogus string
for that name, e.g.

    2.12.53_45_g43fc4db-%{fullrelease}

This patch simply removes the "-%{fullrelease}" suffix from
these lines in lustre.spec.in.

This patch is back-ported from the following one:
Lustre-commit: 48e16113731a1a9fff06370a0a11ea083ad290b8
Lustre-change: https://review.whamcloud.com/34883

Test-Parameters: trivial
Signed-off-by: Ben Menadue <ben.menadue@anu.edu.au>
Change-Id: Ia13f339f57b89c02443ebc2d68f0aa3b0802319a
Reviewed-by: Jian Yu <yujian@whamcloud.com>
Reviewed-by: Li Dongyang <dongyangli@ddn.com>
Reviewed-on: https://review.whamcloud.com/35162
Tested-by: Jenkins
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Yang Sheng <ys@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>