Removed internal call perm_begin() inside perm_app_install()

Removed internal call perm_begin() inside perm_app_install()

Call perm_begin() inside app_install() function is redundant,
internal call rdb_add_appliaction() makes rdb_begin()

    [Issue#]       SSDWSSP-673
    [Bug/Feature]  N/A
    [Cause]        N/A
    [Solution]     N/A

    [Verification] build platform via dbuild,
                   run osp, wrt installer:
                        wrt-installer --install
                        /usr/bin/TestMisiuPysiu123.wgt
                        wrt-installer --install
                        /usr/bin/MisiuPysiu123Partner.wgt
                        wrt-installer --install
                        /usr/bin/MisiuPysiu123Platform.wgt
                        osp-installer -i /usr/bin/uqNfgEjqc7-1.0.0-arm.tpk
                        osp-installer -i /usr/bin/j4RuPsZrNt-1.0.0-arm.tpk
                        osp-installer -i /usr/bin/V5LKqDFBXm-1.0.0-arm.tpk
                        wrt-installer --uninstall-name QwCqJ0ttyS
                        wrt-installer --uninstall-name 7btsV1Y0sX
                        wrt-installer --uninstall-name G4DE3U2vmW
                        osp-installer -u uqNfgEjqc7
                        osp-installer -u j4RuPsZrNt
                        osp-installer -u V5LKqDFBXm

Change-Id: I154a5424eff562d4a2cb4026a3087208991f6d19