Added missing distributions to the suse platform family

[m-terel]

We've found using gopsutil quite useful in open-source rport project. But we've encountered a problem of detecting a platform family for Linux opensuse-leap distribution. Here is an example of os-release file:

    NAME="openSUSE Leap"
    VERSION="15.2"
    ID="opensuse-leap"
    ID_LIKE="suse opensuse"
    VERSION_ID="15.2"
    PRETTY_NAME="openSUSE Leap 15.2"
    ANSI_COLOR="0;32"
    CPE_NAME="cpe:/o:opensuse:leap:15.2"
    BUG_REPORT_URL="https://bugs.opensuse.org"
    HOME_URL="https://www.opensuse.org/"

PlatformInformationWithContext detects platform family by ID attribute. Since "opensuse-leap" is missing in the switch statement, it returns an empty string for family. This PR fixes this issue.

Also, according to https://en.opensuse.org/SDB:SUSE_and_openSUSE_Products_Version_Outputs there are other distributions: "opensuse-tumbleweed", "opensuse-tumbleweed-kubic", "sled", "caasp". This PR fixes the issue for all missing distributions.

BTW, if you like our project https://github.com/cloudradar-monitoring/rport - please give us a star🙂

[shirou]

confirmed on openSUSE Leap 15.2.

=== RUN   TestPlatformInformation
    host_test.go:191: PlatformInformation(): opensuse-leap, suse, 15.2

Thank you so much!

[Lomanic]

This is missing the same fix in v3