thirdparty: add curl to help build prometheus

[ChenQShmily]

prometheus-gateway need "curl.h" to run
so add curl to 3rdparty to build prometheus-cpp

[hycdong]

TODO:

• add curl package to aliyun

[neverchanje]

Why not use apt-get install libcurl. If libcurl is a necessity, build it as minimal as possible, take
https://github.com/cloudera/kudu/blob/master/thirdparty/build-definitions.sh#L632
as a example:

    --prefix=$PREFIX \
    --disable-dict \
    --disable-file \
    --disable-ftp \
    --disable-gopher \
    --disable-imap \
    --disable-ipv6 \
    --disable-ldap \
    --disable-ldaps \
    --disable-manual \
    --disable-pop3 \
    --disable-rtsp \
    --disable-smtp \
    --disable-telnet \
    --disable-tftp \
    --without-librtmp \
    --without-libssh2

You should figure out what is not required and disable them.

[vagetablechicken]

Why not use apt-get install libcurl

prometheus是附加组件，没必要强制装libcurl吧。之后还是比较想把thirdparty做的更灵活点，不需要下的库就不用下了，下载编译thirdparty是真的久。

[vagetablechicken]

这个在docker中测过了么？要保证prometheus client能推数据出去，才能证明没有问题

[ChenQShmily]

这个在docker中测过了么？要保证prometheus client能推数据出去，才能证明没有问题

测过了，是可以推数据的

[vagetablechicken]

这个在docker中测过了么？要保证prometheus client能推数据出去，才能证明没有问题

测过了，是可以推数据的

#287 (comment)
参考这个comment，精简下curl的编译吧