Fix various typos.

Signed-off-by: Venkateswararao Jujjuri (JV) <jvrao@linux.vnet.ibm.com>
Fix systemd sysconfig files for nfs-ganesha

Consolidate two files into one and modify install scripts to pick right
sysconfig file.

Signed-off-by: Venkateswararao Jujjuri (JV) <jvrao@linux.vnet.ibm.com>