MFC r328160:
Add to bsnmpd(1) ability to specify multiple community strings with
different access rights.

By default there are two community strings with index 1 and 2, one for
read-only access and second for read-write access:

begemotSnmpdCommunityString.0.1 = $(read)
begemotSnmpdCommunityString.0.2 = $(write)

Now it is possible to define additional community strings using different
indexes:

begemotSnmpdCommunityString.0.3 = "SomeString1"
begemotSnmpdCommunityPermission.0.3 = 1
begemotSnmpdCommunityString.0.4 = "SomeString2"
begemotSnmpdCommunityPermission.0.4 = 2
begemotSnmpdCommunityString.0.5 = "SomeString3"
begemotSnmpdCommunityString.0.6 = "SomeString4"

New attribute begemotSnmpdCommunityPermission can be used to specify access
rights: 1 means "read-only" access, 2 means "read-write" access. If
attribute is not specified for some index this means "read-only" rights.

Community strings must be unique, i.e. must not be the same for different
indexes.

Obtained from: Yandex LLC
Sponsored by: Yandex LLC
Differential Revision: https://reviews.freebsd.org/D13785

MFC r328171:
Rename "index" variable to "idx" since gcc complains that it shadows
index(3) function declaration.

MFC r310648:

style(9): clean up trailing whitespace

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

This commit was generated by cvs2svn to compensate for changes in r156066,
which included commits to RCS files with non-trunk default branches.

Virgin import of bsnmpd 1.12

Vendor fix: make the default read and write communities NULL. This
basically disables any access unless other strings are set in the config
file. Note, that there is no way to set the communities back to NULL once
they're set to something not NULL.

Virgin import of bsnmpd 1.8

Virgin import of bsnmpd 1.7

Import of bsnmpd 1.6

Virgin import of bsnmpd 1.5a

Virgin import of bsnmp 1.4